CVE-2026-52995

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52995", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.377Z", "datePublished": "2026-06-24T16:29:08.229Z", "dateUpdated": "2026-11-06T16:23:53.125Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:08.229Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: zero per-item info buffer before handing it to visitors\n\nrds_for_each_conn_info() and rds_walk_conn_path_info() both hand a\ncaller-allocated on-stack u64 buffer to a per-connection visitor and\nthen copy the full item_len bytes back to user space via\nrds_info_copy() regardless of how much of the buffer the visitor\nactually wrote.\n\nrds_ib_conn_info_visitor() and rds6_ib_conn_info_visitor() only\nwrite a subset of their output struct when the underlying\nrds_connection is not in state RDS_CONN_UP (src/dst addr, tos, sl\nand the two GIDs via explicit memsets). Several u32 fields\n(max_send_wr, max_recv_wr, max_send_sge, rdma_mr_max, rdma_mr_size,\ncache_allocs) and the 2-byte alignment hole between sl and\ncache_allocs remain as whatever stack contents preceded the visitor\ncall and are then memcpy_to_user()'d out to user space.\n\nstruct rds_info_rdma_connection and struct rds6_info_rdma_connection\nare the only rds_info_* structs in include/uapi/linux/rds.h that are\nnot marked __attribute__((packed)), so they have a real alignment\nhole. The other info visitors (rds_conn_info_visitor,\nrds6_conn_info_visitor, rds_tcp_tc_info, ...) write all fields of\ntheir packed output struct today and are not known to be vulnerable,\nbut a future visitor that adds a conditional write-path would have\nthe same bug.\n\nReproduction on a kernel built without CONFIG_INIT_STACK_ALL_ZERO=y:\na local unprivileged user opens AF_RDS, sets SO_RDS_TRANSPORT=IB,\nbinds to a local address on an RDMA-capable netdev (rxe soft-RoCE on\nany netdev is sufficient), sendto()'s any peer on the same subnet\n(fails cleanly but installs an rds_connection in the global hash in\nRDS_CONN_CONNECTING), then calls getsockopt(SOL_RDS,\nRDS_INFO_IB_CONNECTIONS). The returned 68-byte item contains 26\nbytes of stack garbage including kernel text/data pointers:\n\n 0..7 0a 63 00 01 0a 63 00 02 src=10.99.0.1 dst=10.99.0.2\n 8..39 00 ... gids (memset-zeroed)\n 40..47 e0 92 a3 81 ff ff ff ff kernel pointer (max_send_wr)\n 48..55 7f 37 b5 81 ff ff ff ff kernel pointer (rdma_mr_max)\n 56..59 01 00 08 00 rdma_mr_size (garbage)\n 60..61 00 00 tos, sl\n 62..63 00 00 alignment padding\n 64..67 18 00 00 00 cache_allocs (garbage)\n\nFix by zeroing the per-item buffer in both rds_for_each_conn_info()\nand rds_walk_conn_path_info() before invoking the visitor. This\ncovers the IPv4/IPv6 IB visitors and hardens all current and future\nvisitors against the same class of bug.\n\nNo functional change for visitors that fully populate their output.\n\nChanges in v2:\n- retarget at the net tree (subject prefix \"[PATCH net v2]\",\n net/rds: prefix in the title)\n- pick up Reviewed-by tags from Sharath Srinivasan and\n Allison Henderson"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/rds/connection.c"], "versions": [{"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "81651e9d7dea1c048d2952f57632a042931d7b43", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "0797b2e6901827694aa9c34c4c72118c8c97fba1", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "5e67cc262afb384e835c3327e9d954eeaedc6a87", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "b6ba93a7b71ed443c9843eb12d27ed86f1e52694", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "c7cb9eed8215a790f052f49cdccf577720d2bb62", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "91ce1bb6e4194dc2321748f68145359dcf86e350", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "912ba2e5704fdb8bc5decda96dfc1a57838f0099", "status": "affected", "versionType": "git"}, {"version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "c88eb7e8d8397a8c1db59c425332c5a30b2a1682", "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/rds/connection.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "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": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "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": "2.6.30", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/81651e9d7dea1c048d2952f57632a042931d7b43"}, {"url": "https://git.kernel.org/stable/c/0797b2e6901827694aa9c34c4c72118c8c97fba1"}, {"url": "https://git.kernel.org/stable/c/5e67cc262afb384e835c3327e9d954eeaedc6a87"}, {"url": "https://git.kernel.org/stable/c/b6ba93a7b71ed443c9843eb12d27ed86f1e52694"}, {"url": "https://git.kernel.org/stable/c/c7cb9eed8215a790f052f49cdccf577720d2bb62"}, {"url": "https://git.kernel.org/stable/c/91ce1bb6e4194dc2321748f68145359dcf86e350"}, {"url": "https://git.kernel.org/stable/c/912ba2e5704fdb8bc5decda96dfc1a57838f0099"}, {"url": "https://git.kernel.org/stable/c/c88eb7e8d8397a8c1db59c425332c5a30b2a1682"}], "title": "net/rds: zero per-item info buffer before handing it to visitors", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-52995", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:15:59.094455Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:23:53.125Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-52995", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:15:59.094455Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:16:00.668Z"}}], "cna": {"title": "net/rds: zero per-item info buffer before handing it to visitors", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "81651e9d7dea1c048d2952f57632a042931d7b43", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "0797b2e6901827694aa9c34c4c72118c8c97fba1", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "5e67cc262afb384e835c3327e9d954eeaedc6a87", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "b6ba93a7b71ed443c9843eb12d27ed86f1e52694", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "c7cb9eed8215a790f052f49cdccf577720d2bb62", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "91ce1bb6e4194dc2321748f68145359dcf86e350", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "912ba2e5704fdb8bc5decda96dfc1a57838f0099", "versionType": "git"}, {"status": "affected", "version": "ec16227e14141e4fd7ae76354c09dadfe2449d9e", "lessThan": "c88eb7e8d8397a8c1db59c425332c5a30b2a1682", "versionType": "git"}], "programFiles": ["net/rds/connection.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.30", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/rds/connection.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/81651e9d7dea1c048d2952f57632a042931d7b43"}, {"url": "https://git.kernel.org/stable/c/0797b2e6901827694aa9c34c4c72118c8c97fba1"}, {"url": "https://git.kernel.org/stable/c/5e67cc262afb384e835c3327e9d954eeaedc6a87"}, {"url": "https://git.kernel.org/stable/c/b6ba93a7b71ed443c9843eb12d27ed86f1e52694"}, {"url": "https://git.kernel.org/stable/c/c7cb9eed8215a790f052f49cdccf577720d2bb62"}, {"url": "https://git.kernel.org/stable/c/91ce1bb6e4194dc2321748f68145359dcf86e350"}, {"url": "https://git.kernel.org/stable/c/912ba2e5704fdb8bc5decda96dfc1a57838f0099"}, {"url": "https://git.kernel.org/stable/c/c88eb7e8d8397a8c1db59c425332c5a30b2a1682"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: zero per-item info buffer before handing it to visitors\n\nrds_for_each_conn_info() and rds_walk_conn_path_info() both hand a\ncaller-allocated on-stack u64 buffer to a per-connection visitor and\nthen copy the full item_len bytes back to user space via\nrds_info_copy() regardless of how much of the buffer the visitor\nactually wrote.\n\nrds_ib_conn_info_visitor() and rds6_ib_conn_info_visitor() only\nwrite a subset of their output struct when the underlying\nrds_connection is not in state RDS_CONN_UP (src/dst addr, tos, sl\nand the two GIDs via explicit memsets). Several u32 fields\n(max_send_wr, max_recv_wr, max_send_sge, rdma_mr_max, rdma_mr_size,\ncache_allocs) and the 2-byte alignment hole between sl and\ncache_allocs remain as whatever stack contents preceded the visitor\ncall and are then memcpy_to_user()'d out to user space.\n\nstruct rds_info_rdma_connection and struct rds6_info_rdma_connection\nare the only rds_info_* structs in include/uapi/linux/rds.h that are\nnot marked __attribute__((packed)), so they have a real alignment\nhole. The other info visitors (rds_conn_info_visitor,\nrds6_conn_info_visitor, rds_tcp_tc_info, ...) write all fields of\ntheir packed output struct today and are not known to be vulnerable,\nbut a future visitor that adds a conditional write-path would have\nthe same bug.\n\nReproduction on a kernel built without CONFIG_INIT_STACK_ALL_ZERO=y:\na local unprivileged user opens AF_RDS, sets SO_RDS_TRANSPORT=IB,\nbinds to a local address on an RDMA-capable netdev (rxe soft-RoCE on\nany netdev is sufficient), sendto()'s any peer on the same subnet\n(fails cleanly but installs an rds_connection in the global hash in\nRDS_CONN_CONNECTING), then calls getsockopt(SOL_RDS,\nRDS_INFO_IB_CONNECTIONS). The returned 68-byte item contains 26\nbytes of stack garbage including kernel text/data pointers:\n\n 0..7 0a 63 00 01 0a 63 00 02 src=10.99.0.1 dst=10.99.0.2\n 8..39 00 ... gids (memset-zeroed)\n 40..47 e0 92 a3 81 ff ff ff ff kernel pointer (max_send_wr)\n 48..55 7f 37 b5 81 ff ff ff ff kernel pointer (rdma_mr_max)\n 56..59 01 00 08 00 rdma_mr_size (garbage)\n 60..61 00 00 tos, sl\n 62..63 00 00 alignment padding\n 64..67 18 00 00 00 cache_allocs (garbage)\n\nFix by zeroing the per-item buffer in both rds_for_each_conn_info()\nand rds_walk_conn_path_info() before invoking the visitor. This\ncovers the IPv4/IPv6 IB visitors and hardens all current and future\nvisitors against the same class of bug.\n\nNo functional change for visitors that fully populate their output.\n\nChanges in v2:\n- retarget at the net tree (subject prefix \"[PATCH net v2]\",\n net/rds: prefix in the title)\n- pick up Reviewed-by tags from Sharath Srinivasan and\n Allison Henderson"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.258", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.209", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.175", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.141", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.91", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.33", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.10", "versionStartIncluding": "2.6.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "2.6.30"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:29:08.229Z"}}}, "cveMetadata": {"cveId": "CVE-2026-52995", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:23:53.125Z", "dateReserved": "2026-06-09T07:44:35.377Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-24T16:29:08.229Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Several u32 fields\n(max_send_wr, max_recv_wr, max_send_sge, rdma_mr_max, rdma_mr_size,\ncache_allocs) and the 2-byte alignment hole between sl and\ncache_allocs remain as whatever stack contents preceded the visitor\ncall and are then memcpy_to_user()'d out to user space.\n\nstruct rds_info_rdma_connection and struct rds6_info_rdma_connection\nare the only rds_info_* structs in include/uapi/linux/rds.h that are\nnot marked __attribute__((packed)), so they have a real alignment\nhole. The other info visitors (rds_conn_info_visitor,\nrds6_conn_info_visitor, rds_tcp_tc_info, ...) write all fields of\ntheir packed output struct today and are not known to be vulnerable,\nbut a future visitor that adds a conditional write-path would have\nthe same bug.\n\nReproduction on a kernel built without CONFIG_INIT_STACK_ALL_ZERO=y:\na local unprivileged user opens AF_RDS, sets SO_RDS_TRANSPORT=IB,\nbinds to a local address on an RDMA-capable netdev (rxe soft-RoCE on\nany netdev is sufficient), sendto()'s any peer on the same subnet\n(fails cleanly but installs an rds_connection in the global hash in\nRDS_CONN_CONNECTING), then calls getsockopt(SOL_RDS,\nRDS_INFO_IB_CONNECTIONS). The returned 68-byte item contains 26\nbytes of stack garbage including kernel text/data pointers:\n\n 0..7 0a 63 00 01 0a 63 00 02 src=10.99.0.1 dst=10.99.0.2\n 8..39 00 ... gids (memset-zeroed)\n 40..47 e0 92 a3 81 ff ff ff ff kernel pointer (max_send_wr)\n 48..55 7f 37 b5 81 ff ff ff ff kernel pointer (rdma_mr_max)\n 56..59 01 00 08 00 rdma_mr_size (garbage)\n 60..61 00 00 tos, sl\n 62..63 00 00 alignment padding\n 64..67 18 00 00 00 cache_allocs (garbage)\n\nFix by zeroing the per-item buffer in both rds_for_each_conn_info()\nand rds_walk_conn_path_info() before invoking the visitor. This\ncovers the IPv4/IPv6 IB visitors and hardens all current and future\nvisitors against the same class of bug.\n\nNo functional change for visitors that fully populate their output.\n\nChanges in v2:\n- retarget at the net tree (subject prefix \"[PATCH net v2]\",\n net/rds: prefix in the title)\n- pick up Reviewed-by tags from Sharath Srinivasan and\n Allison Henderson"}], "id": "CVE-2026-52995", "lastModified": "2026-11-06T17:18:00.297", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52995", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:15:59.094455Z", "version": "2.0.3"}}]}, "published": "2026-06-24T17:17:10.423", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0797b2e6901827694aa9c34c4c72118c8c97fba1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5e67cc262afb384e835c3327e9d954eeaedc6a87"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/81651e9d7dea1c048d2952f57632a042931d7b43"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/912ba2e5704fdb8bc5decda96dfc1a57838f0099"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91ce1bb6e4194dc2321748f68145359dcf86e350"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6ba93a7b71ed443c9843eb12d27ed86f1e52694"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c7cb9eed8215a790f052f49cdccf577720d2bb62"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c88eb7e8d8397a8c1db59c425332c5a30b2a1682"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/rds: zero per-item info buffer before handing it to visitors", "id": "2492396", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492396"}, "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-909", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/rds: zero per-item info buffer before handing it to visitors\nrds_for_each_conn_info() and rds_walk_conn_path_info() both hand a\ncaller-allocated on-stack u64 buffer to a per-connection visitor and\nthen copy the full item_len bytes back to user space via\nrds_info_copy() regardless of how much of the buffer the visitor\nactually wrote.\nrds_ib_conn_info_visitor() and rds6_ib_conn_info_visitor() only\nwrite a subset of their output struct when the underlying\nrds_connection is not in state RDS_CONN_UP (src/dst addr, tos, sl\nand the two GIDs via explicit memsets). Several u32 fields\n(max_send_wr, max_recv_wr, max_send_sge, rdma_mr_max, rdma_mr_size,\ncache_allocs) and the 2-byte alignment hole between sl and\ncache_allocs remain as whatever stack contents preceded the visitor\ncall and are then memcpy_to_user()'d out to user space.\nstruct rds_info_rdma_connection and struct rds6_info_rdma_connection\nare the only rds_info_* structs in include/uapi/linux/rds.h that are\nnot marked __attribute__((packed)), so they have a real alignment\nhole. The other info visitors (rds_conn_info_visitor,\nrds6_conn_info_visitor, rds_tcp_tc_info, ...) write all fields of\ntheir packed output struct today and are not known to be vulnerable,\nbut a future visitor that adds a conditional write-path would have\nthe same bug.\nReproduction on a kernel built without CONFIG_INIT_STACK_ALL_ZERO=y:\na local unprivileged user opens AF_RDS, sets SO_RDS_TRANSPORT=IB,\nbinds to a local address on an RDMA-capable netdev (rxe soft-RoCE on\nany netdev is sufficient), sendto()'s any peer on the same subnet\n(fails cleanly but installs an rds_connection in the global hash in\nRDS_CONN_CONNECTING), then calls getsockopt(SOL_RDS,\nRDS_INFO_IB_CONNECTIONS). The returned 68-byte item contains 26\nbytes of stack garbage including kernel text/data pointers:\n0..7 0a 63 00 01 0a 63 00 02 src=10.99.0.1 dst=10.99.0.2\n8..39 00 ... gids (memset-zeroed)\n40..47 e0 92 a3 81 ff ff ff ff kernel pointer (max_send_wr)\n48..55 7f 37 b5 81 ff ff ff ff kernel pointer (rdma_mr_max)\n56..59 01 00 08 00 rdma_mr_size (garbage)\n60..61 00 00 tos, sl\n62..63 00 00 alignment padding\n64..67 18 00 00 00 cache_allocs (garbage)\nFix by zeroing the per-item buffer in both rds_for_each_conn_info()\nand rds_walk_conn_path_info() before invoking the visitor. This\ncovers the IPv4/IPv6 IB visitors and hardens all current and future\nvisitors against the same class of bug.\nNo functional change for visitors that fully populate their output.\nChanges in v2:\n- retarget at the net tree (subject prefix \"[PATCH net v2]\",\nnet/rds: prefix in the title)\n- pick up Reviewed-by tags from Sharath Srinivasan and\nAllison Henderson", "A flaw was found in the Linux kernel's Reliable Datagram Sockets (RDS) subsystem. This vulnerability allows a local unprivileged user to disclose sensitive kernel memory. When a user queries connection information through `getsockopt(SOL_RDS, RDS_INFO_IB_CONNECTIONS)` while an RDS connection is not fully established, the kernel fails to properly initialize a buffer. This oversight results in uninitialized stack memory, which may contain kernel text or data pointers, being copied to user space, leading to information disclosure."], "name": "CVE-2026-52995", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-52995\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-52995\nhttps://lore.kernel.org/linux-cve-announce/2026062445-CVE-2026-52995-7a25@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,81651e9d7dea1c048d2952f57632a042931d7b43)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,0797b2e6901827694aa9c34c4c72118c8c97fba1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,5e67cc262afb384e835c3327e9d954eeaedc6a87)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,b6ba93a7b71ed443c9843eb12d27ed86f1e52694)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,c7cb9eed8215a790f052f49cdccf577720d2bb62)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,91ce1bb6e4194dc2321748f68145359dcf86e350)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,912ba2e5704fdb8bc5decda96dfc1a57838f0099)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec16227e14141e4fd7ae76354c09dadfe2449d9e,c88eb7e8d8397a8c1db59c425332c5a30b2a1682)"}}], "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": "2.6.30"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.258,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.209,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.175,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1,*]"}}], "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": "2026-06-24T18:45:05.694040+00:00", "updated": "2026-08-12T06:45:04.797511+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}