{"id":"CVE-2026-80729","summary":"mm/huge_memory: initialise workingset state before folio split","details":"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.","modified":"2026-09-05T03:48:34.696576865Z","published":"2026-09-03T08:21:47.722Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80729.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/aca1f2d5de17e138bc6c4859126b77e516b82541"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80729.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80729"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"58729c04cf1092b87aeef0bf0998c9e2e4771133"},{"fixed":"d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55"},{"fixed":"aca1f2d5de17e138bc6c4859126b77e516b82541"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80729.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"7.1.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80729.json"}}],"schema_version":"1.9.0"}