CVE-2026-46024

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46024", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.093Z", "datePublished": "2026-05-27T12:56:29.932Z", "dateUpdated": "2026-10-19T19:26:41.575Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:29:11.187Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()\n\nIf a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both\nprotocol and result, this is currently not treated as an error. In case\nof ac->negotiating == true and ac->protocol > 0, this leads to setting\nac->protocol = 0 and ac->ops = NULL. Thereafter, the check for\nac->protocol != protocol returns false, and init_protocol() is not\ncalled. Subsequently, ac->ops->handle_reply() is called, which leads to\na null pointer dereference, because ac->ops is still NULL.\n\nThis patch changes the check for ac->protocol != protocol to\n!ac->protocol, as this also includes the case when the protocol was set\nto zero in the message. This causes the message to be treated as\ncontaining a bad auth protocol."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable code processes a CEPH_MSG_AUTH_REPLY received from a remote Ceph monitor over TCP; the libceph client reaches monitors across routed networks, so the attacker (rogue monitor or MITM) operates remotely.\nAC:L - The attacker fully controls the reply message contents and sends protocol=0/result=0 during the negotiation it controls; the crash is deterministic with no race or unobservable memory-layout dependency.\nPR:N - The crafted reply is processed during the authentication handshake before the monitor's identity is verified, and a remote server/MITM needs no privileges on the victim client.\nUI:N - Once a CephFS/RBD client is connected, monitor connections and reconnections (and the negotiation state) occur automatically, so no user action is required at attack time.\nS:U - The crash occurs within the kernel itself with no crossing of a security boundary into another authority such as a hypervisor or other VM.\nC:N - A NULL pointer dereference yields no information disclosure; no attacker-controlled memory is read or leaked.\nI:N - The NULL dereference does not modify any kernel data and provides no write primitive.\nA:H - Dereferencing the NULL ac->ops triggers a kernel oops/panic, crashing the system \u2014 a remote denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/auth.c"], "versions": [{"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "9ded62c302c0342efdb5eda3bf6e75720caad0df", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "f101271fcf55d7eacfefd610b51ec65f46ba8118", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "4b2738b93edad661178340239de657d876b73d3d", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "927e4bd5692f2a4901808822981fb2c8d4456548", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "016bc663657366d386993f63eb31072eb45a2b77", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "8f2be7285941a33a9f72579a23b96392f83c758e", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "5199c125d25aeae8615c4fc31652cc0fe624338e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/auth.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9ded62c302c0342efdb5eda3bf6e75720caad0df"}, {"url": "https://git.kernel.org/stable/c/f101271fcf55d7eacfefd610b51ec65f46ba8118"}, {"url": "https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d"}, {"url": "https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548"}, {"url": "https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77"}, {"url": "https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e"}, {"url": "https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e"}], "title": "libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46024", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:18:54.853796Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T19:26:41.575Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46024", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.093Z", "datePublished": "2026-05-27T12:56:29.932Z", "dateUpdated": "2026-10-19T19:26:41.575Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:29:11.187Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()\n\nIf a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both\nprotocol and result, this is currently not treated as an error. In case\nof ac->negotiating == true and ac->protocol > 0, this leads to setting\nac->protocol = 0 and ac->ops = NULL. Thereafter, the check for\nac->protocol != protocol returns false, and init_protocol() is not\ncalled. Subsequently, ac->ops->handle_reply() is called, which leads to\na null pointer dereference, because ac->ops is still NULL.\n\nThis patch changes the check for ac->protocol != protocol to\n!ac->protocol, as this also includes the case when the protocol was set\nto zero in the message. This causes the message to be treated as\ncontaining a bad auth protocol."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable code processes a CEPH_MSG_AUTH_REPLY received from a remote Ceph monitor over TCP; the libceph client reaches monitors across routed networks, so the attacker (rogue monitor or MITM) operates remotely.\nAC:L - The attacker fully controls the reply message contents and sends protocol=0/result=0 during the negotiation it controls; the crash is deterministic with no race or unobservable memory-layout dependency.\nPR:N - The crafted reply is processed during the authentication handshake before the monitor's identity is verified, and a remote server/MITM needs no privileges on the victim client.\nUI:N - Once a CephFS/RBD client is connected, monitor connections and reconnections (and the negotiation state) occur automatically, so no user action is required at attack time.\nS:U - The crash occurs within the kernel itself with no crossing of a security boundary into another authority such as a hypervisor or other VM.\nC:N - A NULL pointer dereference yields no information disclosure; no attacker-controlled memory is read or leaked.\nI:N - The NULL dereference does not modify any kernel data and provides no write primitive.\nA:H - Dereferencing the NULL ac->ops triggers a kernel oops/panic, crashing the system \u2014 a remote denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/auth.c"], "versions": [{"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "9ded62c302c0342efdb5eda3bf6e75720caad0df", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "f101271fcf55d7eacfefd610b51ec65f46ba8118", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "4b2738b93edad661178340239de657d876b73d3d", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "927e4bd5692f2a4901808822981fb2c8d4456548", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "016bc663657366d386993f63eb31072eb45a2b77", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "8f2be7285941a33a9f72579a23b96392f83c758e", "status": "affected", "versionType": "git"}, {"version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "lessThan": "5199c125d25aeae8615c4fc31652cc0fe624338e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/auth.c"], "versions": [{"version": "2.6.34", "status": "affected"}, {"version": "0", "lessThan": "2.6.34", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9ded62c302c0342efdb5eda3bf6e75720caad0df"}, {"url": "https://git.kernel.org/stable/c/f101271fcf55d7eacfefd610b51ec65f46ba8118"}, {"url": "https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d"}, {"url": "https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548"}, {"url": "https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77"}, {"url": "https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e"}, {"url": "https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e"}], "title": "libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46024", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:18:54.853796Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T15:18:55.636Z"}, "title": "CISA ADP Vulnrichment"}]}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/ceph/auth.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9ded62c302c0342efdb5eda3bf6e75720caad0df", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}, {"lessThan": "f101271fcf55d7eacfefd610b51ec65f46ba8118", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}, {"lessThan": "4b2738b93edad661178340239de657d876b73d3d", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}, {"lessThan": "927e4bd5692f2a4901808822981fb2c8d4456548", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}, {"lessThan": "016bc663657366d386993f63eb31072eb45a2b77", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}, {"lessThan": "8f2be7285941a33a9f72579a23b96392f83c758e", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}, {"lessThan": "5199c125d25aeae8615c4fc31652cc0fe624338e", "status": "affected", "version": "4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/ceph/auth.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": "5.15.*", "status": "unaffected", "version": "5.15.209", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.175", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.140", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.86", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.27", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "66FEB83E-2D81-4BA1-B8BE-C61B1BC97290", "versionEndExcluding": "5.15.209", "versionStartIncluding": "2.6.34.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "55DA1C62-9991-451E-B8A8-E0004E00F789", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:-:*:*:*:*:*:*", "matchCriteriaId": "A3B1BC1D-ED46-4364-A1D9-1FA74182B03A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:rc2:*:*:*:*:*:*", "matchCriteriaId": "86D3F64C-3F27-43E0-B0D4-62CE1E1F4EFB", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:rc3:*:*:*:*:*:*", "matchCriteriaId": "7927713B-5EB0-41EB-86A9-9935775162E0", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:rc4:*:*:*:*:*:*", "matchCriteriaId": "59037296-3143-4FBB-AFF7-D4FE2C85502F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:rc5:*:*:*:*:*:*", "matchCriteriaId": "9CA27FD5-7DBF-4C85-80A9-D523B2E4B033", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:rc6:*:*:*:*:*:*", "matchCriteriaId": "9711E333-A8E7-4F4B-BCFD-2023E889651A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:2.6.34:rc7:*:*:*:*:*:*", "matchCriteriaId": "E04D3358-973B-42A1-8E08-2E3AE947193C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()\n\nIf a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both\nprotocol and result, this is currently not treated as an error. In case\nof ac->negotiating == true and ac->protocol > 0, this leads to setting\nac->protocol = 0 and ac->ops = NULL. Thereafter, the check for\nac->protocol != protocol returns false, and init_protocol() is not\ncalled. Subsequently, ac->ops->handle_reply() is called, which leads to\na null pointer dereference, because ac->ops is still NULL.\n\nThis patch changes the check for ac->protocol != protocol to\n!ac->protocol, as this also includes the case when the protocol was set\nto zero in the message. This causes the message to be treated as\ncontaining a bad auth protocol."}], "id": "CVE-2026-46024", "lastModified": "2026-10-19T20:18:24.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46024", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:18:54.853796Z", "version": "2.0.3"}}]}, "published": "2026-05-27T14:17:20.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/016bc663657366d386993f63eb31072eb45a2b77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4b2738b93edad661178340239de657d876b73d3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5199c125d25aeae8615c4fc31652cc0fe624338e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8f2be7285941a33a9f72579a23b96392f83c758e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/927e4bd5692f2a4901808822981fb2c8d4456548"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9ded62c302c0342efdb5eda3bf6e75720caad0df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f101271fcf55d7eacfefd610b51ec65f46ba8118"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()", "id": "2481926", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481926"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1287", "details": ["A flaw was found in the Linux kernel's libceph component. A remote attacker could send a specially crafted authentication reply message to trigger a null pointer dereference. This vulnerability can lead to a system crash, resulting in a Denial of Service (DoS) for affected systems."], "name": "CVE-2026-46024", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46024\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46024\nhttps://lore.kernel.org/linux-cve-announce/2026052747-CVE-2026-46024-1d35@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,4b2738b93edad661178340239de657d876b73d3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,927e4bd5692f2a4901808822981fb2c8d4456548)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,016bc663657366d386993f63eb31072eb45a2b77)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,8f2be7285941a33a9f72579a23b96392f83c758e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5199c125d25aeae8615c4fc31652cc0fe624338e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.140)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.86)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.27)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.0.4)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.140,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.86,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.27,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc1,*]"}}], "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": "2026-05-27T20:30:40.562289+00:00", "updated": "2026-06-17T22:15:02.517582+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}