{"id":"CVE-2026-80729","state":"PUBLISHED","title":"mm/huge_memory: initialise workingset state before folio split","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: initialise workingset state before folio split\n\nxas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but\n__folio_split() leaves the xa_state's xa_lru unset.  That lets a live,\nmemcg-charged xa_node exist without being linked into the mapping's\nshadow_nodes list_lru; when reclaim later walks the list_lru it trips\nVM_WARN_ON(!css_is_dying()).\n\nUse mapping_set_update() to install both the workingset update callback\nand the shadow_nodes list_lru on the xa_state.","publishedAt":"2026-09-03T08:21:47.722Z","updatedAt":"2026-10-11T13:47:11.562Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"58729c04cf1092b87aeef0bf0998c9e2e4771133","status":"affected","lessThan":"dc87b56b43c9143f2405e434cff1530c3488b571","versionType":"git"},{"version":"58729c04cf1092b87aeef0bf0998c9e2e4771133","status":"affected","lessThan":"d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55","versionType":"git"},{"version":"58729c04cf1092b87aeef0bf0998c9e2e4771133","status":"affected","lessThan":"aca1f2d5de17e138bc6c4859126b77e516b82541","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.9","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]}],"references":["https://git.kernel.org/stable/c/dc87b56b43c9143f2405e434cff1530c3488b571","https://git.kernel.org/stable/c/d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55","https://git.kernel.org/stable/c/aca1f2d5de17e138bc6c4859126b77e516b82541"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80729.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80729","state":"PUBLISHED","datePublished":"2026-09-03T08:21:47.722Z","dateUpdated":"2026-10-11T13:47:11.562Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.789Z"},"containers":{"cna":{"title":"mm/huge_memory: initialise workingset state before folio split","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: initialise workingset state before folio split\n\nxas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but\n__folio_split() leaves the xa_state's xa_lru unset.  That lets a live,\nmemcg-charged xa_node exist without being linked into the mapping's\nshadow_nodes list_lru; when reclaim later walks the list_lru it trips\nVM_WARN_ON(!css_is_dying()).\n\nUse mapping_set_update() to install both the workingset update callback\nand the shadow_nodes list_lru on the xa_state."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"58729c04cf1092b87aeef0bf0998c9e2e4771133","status":"affected","lessThan":"dc87b56b43c9143f2405e434cff1530c3488b571","versionType":"git"},{"version":"58729c04cf1092b87aeef0bf0998c9e2e4771133","status":"affected","lessThan":"d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55","versionType":"git"},{"version":"58729c04cf1092b87aeef0bf0998c9e2e4771133","status":"affected","lessThan":"aca1f2d5de17e138bc6c4859126b77e516b82541","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.9","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/huge_memory.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/dc87b56b43c9143f2405e434cff1530c3488b571"},{"url":"https://git.kernel.org/stable/c/d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55"},{"url":"https://git.kernel.org/stable/c/aca1f2d5de17e138bc6c4859126b77e516b82541"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-11T13:47:11.562Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}