{"id":"CVE-2026-80758","revision":null,"records":[{"revision":"7d30002c33dd4a84858ad79f6512191c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80758","aliases":[],"title":"futex: Avoid private hash use-after-free on final put","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfutex: Avoid private hash use-after-free on final put\n\nfutex_private_hash_put() drops the reference to fph before evaluating\nfph->mm for wake_up_var(). futex_ref_put() enables preemption again before\nreturning. If that put drops the final reference and the task is preempted,\nanother task can pivot to the replacement hash and free the old hash after\nan RCU grace period. The first task then reads fph->mm from the freed\nallocation when it resumes.\n\nKASAN reports a slab-use-after-free in futex_private_hash_put(), with the\nread at offset 24 in a freed kmalloc-512 allocation. The allocation and\nfree stacks point to futex_hash_allocate() and the RCU free path,\nrespectively.\n\nLoad the mm pointer while the fph reference is still held and pass the\nsaved value to wake_up_var(). wake_up_var() uses the pointer as a waitqueue\nkey and does not dereference the mm through it.","state":0,"publishedAt":"2026-09-04T15:12:27.689+00:00","modifiedAt":"2026-10-19T08:43:14.38+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                        \"kernel/futex/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bd54df5ea7cadac520e346d5f0fe5d58e635b6ba\",\n                            \"lessThan\": \"dba60d26e9dda3e157ad6b0934d4232f6c6904ee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd54df5ea7cadac520e346d5f0fe5d58e635b6ba\",\n                            \"lessThan\": \"12cd315a7b6a7d7db3f69d98bfe3909275e9451d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd54df5ea7cadac520e346d5f0fe5d58e635b6ba\",\n                            \"lessThan\": \"25408c62ed4ebcd491d0e9e4b4a5b512547512e4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd54df5ea7cadac520e346d5f0fe5d58e635b6ba\",\n                            \"lessThan\": \"1c7efabfbaf796f11000a46094a69955a01ec6cc\",\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                        \"kernel/futex/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.47\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.11\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.1\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/dba60d26e9dda3e157ad6b0934d4232f6c6904ee","https://git.kernel.org/stable/c/12cd315a7b6a7d7db3f69d98bfe3909275e9451d","https://git.kernel.org/stable/c/25408c62ed4ebcd491d0e9e4b4a5b512547512e4","https://git.kernel.org/stable/c/1c7efabfbaf796f11000a46094a69955a01ec6cc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80758","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80758","identifiers":["CVE-2026-80758"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T06:02:15.5744295+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T06:02:15.5744295+00:00","lastSuccessAt":"2026-11-09T06:02:15.8100724+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.8100756+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-61bf15172f364246efc204ad9b25e3f89710939e13c23b3efb3d009b5fdad808","complete":true,"records":421290,"lastAttemptAt":"2026-11-09T06:02:14.4940664+00:00","lastSuccessAt":"2026-11-09T05:02:14.5253969+00:00","error":"HttpRequestException","lastVerifiedAt":"2026-11-09T05:02:14.5383867+00:00","snapshotPublishedAt":"2026-11-09T04:29:38+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-f553f04411ed4a17a67fa04e822e034e","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T06:06:27.9132877+00:00","lastSuccessAt":"2026-11-09T06:06:26.837455+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:06:26.837455+00:00","snapshotPublishedAt":null,"importing":true,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T06:02:15.5744295+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T06:02:15.5744295+00:00","lastSuccessAt":"2026-11-09T06:02:15.8108397+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.81084+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-5a44a451442747cb81d83104fe1e7771","complete":true,"records":13666,"lastAttemptAt":"2026-11-09T06:02:16.371904+00:00","lastSuccessAt":"2026-11-09T02:08:52.274+00:00","error":null,"lastVerifiedAt":"2026-11-09T02:08:52.274+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T06:02:15.5156789+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.5156789+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T06:02:14.6970768+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:14.6970768+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f6d341f4320a5a0c059c28102ee651c3dd06abc87b84d2bafa4e2a823ec07d35","complete":true,"records":3056,"lastAttemptAt":"2026-11-09T06:02:15.5284383+00:00","lastSuccessAt":"2026-11-09T05:02:23.1539412+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.5284383+00:00","snapshotPublishedAt":"2026-11-09T04:47:48+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-6a1c845b1938b1aa788f0e95c9ac8a8d5a1f07caed5d155840b0616b548c1455","complete":true,"records":231296,"lastAttemptAt":"2026-11-09T06:02:15.4064738+00:00","lastSuccessAt":"2026-11-09T04:03:49.859595+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.4064738+00:00","snapshotPublishedAt":"2026-11-09T03:33:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}