CVE-2026-68160

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68160", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.371Z", "datePublished": "2026-08-10T11:59:26.741Z", "dateUpdated": "2026-10-19T20:58:55.403Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:30:32.455Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()\n\nceph_handle_caps() reads snap_trace_len from the wire-format\nceph_mds_caps header and uses it unconditionally to build a fake\nend pointer (snaptrace + snaptrace_len) that is later handed to\nceph_update_snap_trace() in the CEPH_CAP_OP_IMPORT case:\n\n snaptrace = h + 1;\n snaptrace_len = le32_to_cpu(h->snap_trace_len);\n p = snaptrace + snaptrace_len;\n ...\n case CEPH_CAP_OP_IMPORT:\n if (snaptrace_len) {\n ...\n if (ceph_update_snap_trace(mdsc, snaptrace,\n snaptrace + snaptrace_len,\n false, &realm)) { ... }\n\nceph_update_snap_trace() then decodes a struct ceph_mds_snap_realm\nfrom snaptrace using ceph_decode_need(&p, e, sizeof(*ri), bad)\nwith the attacker-supplied fake end e == snaptrace + snaptrace_len.\nWith snaptrace_len == 0xFFFFFFFF the bound check is trivially\nsatisfied, ri = p reads sizeof(struct ceph_mds_snap_realm) past\nthe legitimate msg->front buffer, and ri->num_snaps /\nri->num_prior_parent_snaps then drive further out-of-bounds\nreads of the encoded snap arrays.\n\nThe eleven msg_version >= 2 .. msg_version >= 12 decoder blocks\nabove the op switch each catch this OOB through their\nceph_decode_*_safe() / ceph_decode_need() helpers, but they sit\nbehind a hdr.version-gated if, so a malicious or compromised\nMDS that sets msg->hdr.version = 1 reaches the IMPORT path with\nno version-gated decoder having validated snap_trace_len. The\nshape has been present since ceph_handle_caps() was introduced.\n\nValidate snap_trace_len against the message front buffer before\nconsuming it, using the canonical ceph_decode_need() / ceph_has_room()\nhelper. The helper bounds the length with subtraction (n <= end - p,\nguarded by end >= p) rather than pointer addition, so it is wrap-safe\nfor the attacker-controlled u32 length on 32-bit builds where\np + snap_trace_len could overflow the address space. This matches the\nrest of the ceph decode path (e.g. the pool_ns_len check a few lines\nbelow), and the existing goto bad cleanup already covers this exit\npath."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - CEPH_MSG_CLIENT_CAPS is received over the kernel Ceph messenger TCP connection from an MDS peer; mds_dispatch() passes it directly to ceph_handle_caps(), so a malicious or compromised MDS (or on-path attacker on an unsigned msgr session) reaches the bug with network data alone.\nAC:L - The attacker fully controls msg->hdr.version and snap_trace_len in the caps header; setting version=1 bypasses all version-gated decoders and snap_trace_len=0xFFFFFFFF yields a fake end pointer that reliably defeats ceph_decode_need(), with no race or memory-layout dependency.\nPR:N - Exploitation requires only the ability to send crafted caps messages as the remote MDS peer on an established session; the attacker needs no account, mount privilege, or other credentials on the victim host beyond the client already being connected to that cluster.\nUI:N - Once CephFS is mounted and the MDS session is open, CEPH_CAP_OP_IMPORT caps messages are delivered and processed automatically during normal cap migration and MDS failover; no additional local user action is needed at exploit time beyond prior cluster connectivity.\nS:U - The out-of-bounds read and resulting snap-realm corruption affect only the kernel CephFS client\u2019s internal state within the same kernel security authority; there is no VM escape, sandbox breakout, or cross-authority boundary crossing.\nC:H - ceph_update_snap_trace() decodes struct ceph_mds_snap_realm and snap arrays using an attacker-supplied fake end pointer, reading sizeof(*ri) and further attacker-influenced extents past the legitimate msg->front buffer into adjacent kernel memory without copying to userspace.\nI:H - Out-of-bounds kernel memory is interpreted as snap-realm metadata and copied via dup_array() into newly allocated kernel heap structures (realm->snaps, realm->prior_parent_snaps), corrupting authoritative snap state and providing a memory-corruption primitive that could be leveraged for further kernel compromise.\nA:H - Out-of-bounds reads can fault on unmapped pages causing a kernel oops; the ceph_update_snap_trace() error path issues WARN(1), fences I/O via CEPH_MOUNT_FENCE_IO, and can close all MDS sessions\u2014effects an attacker can trigger repeatedly at will."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ceph/caps.c"], "versions": [{"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "f913192fc782288e060dafc329b2346934be34cc", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "0c011137194036424e974677e0f1592e22a33d8c", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "cc93f68a31c9b831abf2db8647b5f5b10329d793", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "9081c71796724ffe96cba253f68fbe42363c5295", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "03b417afce19ee6b6e61f1bbbbebac924c9f36d1", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "a4228b93706fb74a484e6ffb271c1cc2af3a2ddb", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "71893c342a26bcff92eaab0b2b75d64aed19308a", "status": "affected", "versionType": "git"}, {"version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ceph/caps.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f913192fc782288e060dafc329b2346934be34cc"}, {"url": "https://git.kernel.org/stable/c/0c011137194036424e974677e0f1592e22a33d8c"}, {"url": "https://git.kernel.org/stable/c/cc93f68a31c9b831abf2db8647b5f5b10329d793"}, {"url": "https://git.kernel.org/stable/c/9081c71796724ffe96cba253f68fbe42363c5295"}, {"url": "https://git.kernel.org/stable/c/03b417afce19ee6b6e61f1bbbbebac924c9f36d1"}, {"url": "https://git.kernel.org/stable/c/a4228b93706fb74a484e6ffb271c1cc2af3a2ddb"}, {"url": "https://git.kernel.org/stable/c/71893c342a26bcff92eaab0b2b75d64aed19308a"}, {"url": "https://git.kernel.org/stable/c/4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02"}], "title": "ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68160", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:45:20.340785Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T20:58:55.403Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68160", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:45:20.340785Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:45:20.888Z"}}], "cna": {"title": "ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 9.8, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - CEPH_MSG_CLIENT_CAPS is received over the kernel Ceph messenger TCP connection from an MDS peer; mds_dispatch() passes it directly to ceph_handle_caps(), so a malicious or compromised MDS (or on-path attacker on an unsigned msgr session) reaches the bug with network data alone.\nAC:L - The attacker fully controls msg->hdr.version and snap_trace_len in the caps header; setting version=1 bypasses all version-gated decoders and snap_trace_len=0xFFFFFFFF yields a fake end pointer that reliably defeats ceph_decode_need(), with no race or memory-layout dependency.\nPR:N - Exploitation requires only the ability to send crafted caps messages as the remote MDS peer on an established session; the attacker needs no account, mount privilege, or other credentials on the victim host beyond the client already being connected to that cluster.\nUI:N - Once CephFS is mounted and the MDS session is open, CEPH_CAP_OP_IMPORT caps messages are delivered and processed automatically during normal cap migration and MDS failover; no additional local user action is needed at exploit time beyond prior cluster connectivity.\nS:U - The out-of-bounds read and resulting snap-realm corruption affect only the kernel CephFS client\u2019s internal state within the same kernel security authority; there is no VM escape, sandbox breakout, or cross-authority boundary crossing.\nC:H - ceph_update_snap_trace() decodes struct ceph_mds_snap_realm and snap arrays using an attacker-supplied fake end pointer, reading sizeof(*ri) and further attacker-influenced extents past the legitimate msg->front buffer into adjacent kernel memory without copying to userspace.\nI:H - Out-of-bounds kernel memory is interpreted as snap-realm metadata and copied via dup_array() into newly allocated kernel heap structures (realm->snaps, realm->prior_parent_snaps), corrupting authoritative snap state and providing a memory-corruption primitive that could be leveraged for further kernel compromise.\nA:H - Out-of-bounds reads can fault on unmapped pages causing a kernel oops; the ceph_update_snap_trace() error path issues WARN(1), fences I/O via CEPH_MOUNT_FENCE_IO, and can close all MDS sessions\u2014effects an attacker can trigger repeatedly at will."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "f913192fc782288e060dafc329b2346934be34cc", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "0c011137194036424e974677e0f1592e22a33d8c", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "cc93f68a31c9b831abf2db8647b5f5b10329d793", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "9081c71796724ffe96cba253f68fbe42363c5295", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "03b417afce19ee6b6e61f1bbbbebac924c9f36d1", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "a4228b93706fb74a484e6ffb271c1cc2af3a2ddb", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "71893c342a26bcff92eaab0b2b75d64aed19308a", "versionType": "git"}, {"status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "lessThan": "4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02", "versionType": "git"}], "programFiles": ["fs/ceph/caps.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.34"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.34", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.265", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.148", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.101", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.42", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.6", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/ceph/caps.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/f913192fc782288e060dafc329b2346934be34cc"}, {"url": "https://git.kernel.org/stable/c/0c011137194036424e974677e0f1592e22a33d8c"}, {"url": "https://git.kernel.org/stable/c/cc93f68a31c9b831abf2db8647b5f5b10329d793"}, {"url": "https://git.kernel.org/stable/c/9081c71796724ffe96cba253f68fbe42363c5295"}, {"url": "https://git.kernel.org/stable/c/03b417afce19ee6b6e61f1bbbbebac924c9f36d1"}, {"url": "https://git.kernel.org/stable/c/a4228b93706fb74a484e6ffb271c1cc2af3a2ddb"}, {"url": "https://git.kernel.org/stable/c/71893c342a26bcff92eaab0b2b75d64aed19308a"}, {"url": "https://git.kernel.org/stable/c/4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()\n\nceph_handle_caps() reads snap_trace_len from the wire-format\nceph_mds_caps header and uses it unconditionally to build a fake\nend pointer (snaptrace + snaptrace_len) that is later handed to\nceph_update_snap_trace() in the CEPH_CAP_OP_IMPORT case:\n\n snaptrace = h + 1;\n snaptrace_len = le32_to_cpu(h->snap_trace_len);\n p = snaptrace + snaptrace_len;\n ...\n case CEPH_CAP_OP_IMPORT:\n if (snaptrace_len) {\n ...\n if (ceph_update_snap_trace(mdsc, snaptrace,\n snaptrace + snaptrace_len,\n false, &realm)) { ... }\n\nceph_update_snap_trace() then decodes a struct ceph_mds_snap_realm\nfrom snaptrace using ceph_decode_need(&p, e, sizeof(*ri), bad)\nwith the attacker-supplied fake end e == snaptrace + snaptrace_len.\nWith snaptrace_len == 0xFFFFFFFF the bound check is trivially\nsatisfied, ri = p reads sizeof(struct ceph_mds_snap_realm) past\nthe legitimate msg->front buffer, and ri->num_snaps /\nri->num_prior_parent_snaps then drive further out-of-bounds\nreads of the encoded snap arrays.\n\nThe eleven msg_version >= 2 .. msg_version >= 12 decoder blocks\nabove the op switch each catch this OOB through their\nceph_decode_*_safe() / ceph_decode_need() helpers, but they sit\nbehind a hdr.version-gated if, so a malicious or compromised\nMDS that sets msg->hdr.version = 1 reaches the IMPORT path with\nno version-gated decoder having validated snap_trace_len. The\nshape has been present since ceph_handle_caps() was introduced.\n\nValidate snap_trace_len against the message front buffer before\nconsuming it, using the canonical ceph_decode_need() / ceph_has_room()\nhelper. The helper bounds the length with subtraction (n <= end - p,\nguarded by end >= p) rather than pointer addition, so it is wrap-safe\nfor the attacker-controlled u32 length on 32-bit builds where\np + snap_trace_len could overflow the address space. This matches the\nrest of the ceph decode path (e.g. the pool_ns_len check a few lines\nbelow), and the existing goto bad cleanup already covers this exit\npath."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "2.6.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "2.6.34"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:30:32.455Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68160", "state": "PUBLISHED", "dateUpdated": "2026-10-19T20:58:55.403Z", "dateReserved": "2026-07-30T09:28:09.371Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T11:59:26.741Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ceph/caps.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f913192fc782288e060dafc329b2346934be34cc", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "0c011137194036424e974677e0f1592e22a33d8c", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "cc93f68a31c9b831abf2db8647b5f5b10329d793", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "9081c71796724ffe96cba253f68fbe42363c5295", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "03b417afce19ee6b6e61f1bbbbebac924c9f36d1", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "a4228b93706fb74a484e6ffb271c1cc2af3a2ddb", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "71893c342a26bcff92eaab0b2b75d64aed19308a", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}, {"lessThan": "4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02", "status": "affected", "version": "a8599bd821d084d04a3290fffae1071624ec00ea", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ceph/caps.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.34"}, {"lessThan": "2.6.34", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()\n\nceph_handle_caps() reads snap_trace_len from the wire-format\nceph_mds_caps header and uses it unconditionally to build a fake\nend pointer (snaptrace + snaptrace_len) that is later handed to\nceph_update_snap_trace() in the CEPH_CAP_OP_IMPORT case:\n\n snaptrace = h + 1;\n snaptrace_len = le32_to_cpu(h->snap_trace_len);\n p = snaptrace + snaptrace_len;\n ...\n case CEPH_CAP_OP_IMPORT:\n if (snaptrace_len) {\n ...\n if (ceph_update_snap_trace(mdsc, snaptrace,\n snaptrace + snaptrace_len,\n false, &realm)) { ... }\n\nceph_update_snap_trace() then decodes a struct ceph_mds_snap_realm\nfrom snaptrace using ceph_decode_need(&p, e, sizeof(*ri), bad)\nwith the attacker-supplied fake end e == snaptrace + snaptrace_len.\nWith snaptrace_len == 0xFFFFFFFF the bound check is trivially\nsatisfied, ri = p reads sizeof(struct ceph_mds_snap_realm) past\nthe legitimate msg->front buffer, and ri->num_snaps /\nri->num_prior_parent_snaps then drive further out-of-bounds\nreads of the encoded snap arrays.\n\nThe eleven msg_version >= 2 .. msg_version >= 12 decoder blocks\nabove the op switch each catch this OOB through their\nceph_decode_*_safe() / ceph_decode_need() helpers, but they sit\nbehind a hdr.version-gated if, so a malicious or compromised\nMDS that sets msg->hdr.version = 1 reaches the IMPORT path with\nno version-gated decoder having validated snap_trace_len. The\nshape has been present since ceph_handle_caps() was introduced.\n\nValidate snap_trace_len against the message front buffer before\nconsuming it, using the canonical ceph_decode_need() / ceph_has_room()\nhelper. The helper bounds the length with subtraction (n <= end - p,\nguarded by end >= p) rather than pointer addition, so it is wrap-safe\nfor the attacker-controlled u32 length on 32-bit builds where\np + snap_trace_len could overflow the address space. This matches the\nrest of the ceph decode path (e.g. the pool_ns_len check a few lines\nbelow), and the existing goto bad cleanup already covers this exit\npath."}], "id": "CVE-2026-68160", "lastModified": "2026-10-19T21:17:56.417", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68160", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:45:20.340785Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:02.300", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/03b417afce19ee6b6e61f1bbbbebac924c9f36d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c011137194036424e974677e0f1592e22a33d8c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/71893c342a26bcff92eaab0b2b75d64aed19308a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9081c71796724ffe96cba253f68fbe42363c5295"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a4228b93706fb74a484e6ffb271c1cc2af3a2ddb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cc93f68a31c9b831abf2db8647b5f5b10329d793"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f913192fc782288e060dafc329b2346934be34cc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: ceph: Linux kernel Ceph: Pre-authentication out-of-bounds read vulnerability", "id": "2513385", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513385"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()\nceph_handle_caps() reads snap_trace_len from the wire-format\nceph_mds_caps header and uses it unconditionally to build a fake\nend pointer (snaptrace + snaptrace_len) that is later handed to\nceph_update_snap_trace() in the CEPH_CAP_OP_IMPORT case:\nsnaptrace = h + 1;\nsnaptrace_len = le32_to_cpu(h->snap_trace_len);\np = snaptrace + snaptrace_len;\n...\ncase CEPH_CAP_OP_IMPORT:\nif (snaptrace_len) {\n...\nif (ceph_update_snap_trace(mdsc, snaptrace,\nsnaptrace + snaptrace_len,\nfalse, &realm)) { ... }\nceph_update_snap_trace() then decodes a struct ceph_mds_snap_realm\nfrom snaptrace using ceph_decode_need(&p, e, sizeof(*ri), bad)\nwith the attacker-supplied fake end e == snaptrace + snaptrace_len.\nWith snaptrace_len == 0xFFFFFFFF the bound check is trivially\nsatisfied, ri = p reads sizeof(struct ceph_mds_snap_realm) past\nthe legitimate msg->front buffer, and ri->num_snaps /\nri->num_prior_parent_snaps then drive further out-of-bounds\nreads of the encoded snap arrays.\nThe eleven msg_version >= 2 .. msg_version >= 12 decoder blocks\nabove the op switch each catch this OOB through their\nceph_decode_*_safe() / ceph_decode_need() helpers, but they sit\nbehind a hdr.version-gated if, so a malicious or compromised\nMDS that sets msg->hdr.version = 1 reaches the IMPORT path with\nno version-gated decoder having validated snap_trace_len. The\nshape has been present since ceph_handle_caps() was introduced.\nValidate snap_trace_len against the message front buffer before\nconsuming it, using the canonical ceph_decode_need() / ceph_has_room()\nhelper. The helper bounds the length with subtraction (n <= end - p,\nguarded by end >= p) rather than pointer addition, so it is wrap-safe\nfor the attacker-controlled u32 length on 32-bit builds where\np + snap_trace_len could overflow the address space. This matches the\nrest of the ceph decode path (e.g. the pool_ns_len check a few lines\nbelow), and the existing goto bad cleanup already covers this exit\npath.", "A flaw was found in the Linux kernel's Ceph component. A remote attacker could exploit this by sending a specially crafted message with a manipulated snap_trace_len value. This pre-authentication vulnerability allows for an out-of-bounds read, potentially leading to information disclosure or a denial of service."], "name": "CVE-2026-68160", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T11:59:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68160\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68160\nhttps://git.kernel.org/stable/c/03b417afce19ee6b6e61f1bbbbebac924c9f36d1\nhttps://git.kernel.org/stable/c/4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02\nhttps://git.kernel.org/stable/c/71893c342a26bcff92eaab0b2b75d64aed19308a\nhttps://git.kernel.org/stable/c/9081c71796724ffe96cba253f68fbe42363c5295\nhttps://git.kernel.org/stable/c/a4228b93706fb74a484e6ffb271c1cc2af3a2ddb"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a8599bd821d084d04a3290fffae1071624ec00ea,9081c71796724ffe96cba253f68fbe42363c5295)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a8599bd821d084d04a3290fffae1071624ec00ea,03b417afce19ee6b6e61f1bbbbebac924c9f36d1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a8599bd821d084d04a3290fffae1071624ec00ea,a4228b93706fb74a484e6ffb271c1cc2af3a2ddb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a8599bd821d084d04a3290fffae1071624ec00ea,71893c342a26bcff92eaab0b2b75d64aed19308a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a8599bd821d084d04a3290fffae1071624ec00ea,4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.34"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.34)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T14:00:08.103909+00:00", "updated": "2026-08-14T01:45:08.197504+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}