{"id":"CVE-2026-74490","revision":"0d307fee8afc4aa7b83fcacf2f2272af","records":[{"revision":"0d307fee8afc4aa7b83fcacf2f2272af","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74490","aliases":[],"title":"tipc: avoid use-after-free in poll trace queue dumps","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: avoid use-after-free in poll trace queue dumps\n\nTIPC socket tracepoints dump queue state through tipc_sk_dump(). Most\nqueue-dump callsites already serialize that walk under the socket lock or\nsk->sk_lock.slock, but tipc_poll() calls trace_tipc_sk_poll(...,\nTIPC_DUMP_ALL, ...) without holding either lock.\n\nThat lets the poll trace path reach tipc_list_dump() and backlog head/tail\ndumping while another context dequeues and frees an skb, leaving the trace\nhelper dereferencing a stale queue entry.\n\nStop the unlocked poll trace site from requesting queue dumps. Other queue\ndump trace callsites keep their existing output under the locking they\nalready provide, while poll still emits the event itself without walking\nlive queue members from an unlocked context.","state":0,"publishedAt":"2026-08-15T12:27:20.107+00:00","modifiedAt":"2026-10-16T19:05:49.765+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/tipc/socket.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"3cd57c6b210d50fd1f7ac1720442ba5be5dc94f8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"ae7fc824970888b4fdaa076819c9a6f2fcede275\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"78706367fe1b98aee0a6de27c62b7f1e3035f38d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"d7940bb6a8e7ab28f972c2875cb05783216312dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"5e82beba4bc1f91d0e64c9c43f2b2fa9cd1c2a7d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"bed792737b5f1ba773054dbe984502958bdfe6ce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"ac2f787980fdf4364cd5651a4c8128e59b8de3aa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b4b9771bcbbd5839b0f77aba55e2f85989ed6779\",\n                            \"lessThan\": \"b4f1719dfea023220e0e6bd892b087d76b2a6a49\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/tipc/socket.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/3cd57c6b210d50fd1f7ac1720442ba5be5dc94f8","https://git.kernel.org/stable/c/ae7fc824970888b4fdaa076819c9a6f2fcede275","https://git.kernel.org/stable/c/78706367fe1b98aee0a6de27c62b7f1e3035f38d","https://git.kernel.org/stable/c/d7940bb6a8e7ab28f972c2875cb05783216312dc","https://git.kernel.org/stable/c/5e82beba4bc1f91d0e64c9c43f2b2fa9cd1c2a7d","https://git.kernel.org/stable/c/bed792737b5f1ba773054dbe984502958bdfe6ce","https://git.kernel.org/stable/c/ac2f787980fdf4364cd5651a4c8128e59b8de3aa","https://git.kernel.org/stable/c/b4f1719dfea023220e0e6bd892b087d76b2a6a49"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74490","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74490","identifiers":["CVE-2026-74490"]},"retained":false,"historicalAffected":[]}],"coverage":[]}