{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64156","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T07:54:57.038Z","datePublished":"2026-07-19T15:40:44.277Z","dateUpdated":"2026-07-19T15:40:44.277Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-19T15:40:44.277Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs, afs: Fix write skipping in dir/link writepages\n\nFix netfs_write_single() and afs_single_writepages() to better handle a\nwrite that would be skipped due to lock contention and WB_SYNC_NONE by\nreturning 1 from netfs_write_single() if it skipped and making\nafs_single_writepages() skip also.  If a skip occurs, the inode must be\nre-marked as the VFS may have cleared the mark.\n\nThis is really only theoretical for directories in netfs_write_single() as\nthe only path to that is through afs_single_writepages() that takes the\n->validate_lock around it, thereby serialising it."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/afs/dir.c","fs/netfs/write_issue.c"],"versions":[{"version":"6dd80936618c4ff852d4db73aca400351d9bd9f0","lessThan":"77bb293049d61e04c12b24ebbffafaf5ab36af90","status":"affected","versionType":"git"},{"version":"6dd80936618c4ff852d4db73aca400351d9bd9f0","lessThan":"f91e10435c0dd37c48b1b25e6236284f656ddc0c","status":"affected","versionType":"git"},{"version":"6dd80936618c4ff852d4db73aca400351d9bd9f0","lessThan":"9871938f99cc6cb266a77265491660e2375271f5","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/dir.c","fs/netfs/write_issue.c"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"6.18.34","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.11","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/77bb293049d61e04c12b24ebbffafaf5ab36af90"},{"url":"https://git.kernel.org/stable/c/f91e10435c0dd37c48b1b25e6236284f656ddc0c"},{"url":"https://git.kernel.org/stable/c/9871938f99cc6cb266a77265491660e2375271f5"}],"title":"netfs, afs: Fix write skipping in dir/link writepages","x_generator":{"engine":"bippy-1.2.0"}}}}