{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72377","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-09T03:40:39.922Z","datePublished":"2026-08-15T05:56:11.017Z","dateUpdated":"2026-08-17T05:13:29.683Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:13:29.683Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Remove setting of AS_RELEASE_ALWAYS for symlinks and mountpoints\n\nRegular AFS files correctly use afs_file_aops which have release_folio\nset as netfs_release_folio, so AS_RELEASE_ALWAYS is valid for them\nwhen fscache is enabled (set via afs_vnode_set_cache()).\nSymlinks and mountpoints in AFS use afs_dir_aops, which does not provide\na release_folio callback. However, afs_apply_status() unconditionally\ncalls mapping_set_release_always() for these.\n\nIn such case when memory management code attempts to release folios,\nfilemap_release_folio() checks folio_needs_release() which\nreturns true due to AS_RELEASE_ALWAYS being set. Since there is no\nrelease_folio callback, it falls through to try_to_free_buffers(),\nwhich at present expects buffer_heads to be not null. For symlinks\nand mountpoints without buffer_heads, this causes pointer dereference.\n\n[dh: Added more bits that were missed]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/afs/inode.c","fs/afs/internal.h"],"versions":[{"version":"eae9e78951bb02a7b94a9adef6e981413d13c564","lessThan":"9d6b0f6d437e2f8350e08678e5e1d20c11c364f3","status":"affected","versionType":"git"},{"version":"eae9e78951bb02a7b94a9adef6e981413d13c564","lessThan":"81e985b4c3a6cbcc443fcdcd3ebda7fcc845d459","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/afs/inode.c","fs/afs/internal.h"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"6.14","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9d6b0f6d437e2f8350e08678e5e1d20c11c364f3"},{"url":"https://git.kernel.org/stable/c/81e985b4c3a6cbcc443fcdcd3ebda7fcc845d459"}],"title":"afs: Remove setting of AS_RELEASE_ALWAYS for symlinks and mountpoints","x_generator":{"engine":"bippy-1.2.0"}}}}