{"id":"CVE-2026-53311","state":"PUBLISHED","title":"fuse: fix uninit-value in fuse_dentry_revalidate()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix uninit-value in fuse_dentry_revalidate()\n\nfuse_dentry_revalidate() may be called with a dentry that didn't had\n->d_time initialised.  The issue was found with KMSAN, where lookup_open()\ncalls __d_alloc(), followed by d_revalidate(), as shown below:\n\n=====================================================\nBUG: KMSAN: uninit-value in fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394\n fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394\n d_revalidate fs/namei.c:1030 [inline]\n lookup_open fs/namei.c:4405 [inline]\n open_last_lookups fs/namei.c:4583 [inline]\n path_openat+0x1614/0x64c0 fs/namei.c:4827\n do_file_open+0x2aa/0x680 fs/namei.c:4859\n[...]\n\nUninit was created at:\n slab_post_alloc_hook mm/slub.c:4466 [inline]\n slab_alloc_node mm/slub.c:4788 [inline]\n kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4807\n __d_alloc+0x55/0xa00 fs/dcache.c:1740\n d_alloc_parallel+0x99/0x2740 fs/dcache.c:2604\n lookup_open fs/namei.c:4398 [inline]\n open_last_lookups fs/namei.c:4583 [inline]\n path_openat+0x135f/0x64c0 fs/namei.c:4827\n do_file_open+0x2aa/0x680 fs/namei.c:4859\n[...]\n=====================================================","publishedAt":"2026-06-26T19:41:04.890Z","updatedAt":"2026-06-26T19:41:04.890Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2396356a945bb022aff02656f59c2a45d457043f","status":"affected","lessThan":"da3d241c5b925f17a9d8051d7a9e0d454d8e01f6","versionType":"git"},{"version":"2396356a945bb022aff02656f59c2a45d457043f","status":"affected","lessThan":"3ac9117ba3deab8a5dd22847355f861686f4bee7","versionType":"git"},{"version":"2396356a945bb022aff02656f59c2a45d457043f","status":"affected","lessThan":"5a6baf204610589f8a5b5a1cd69d1fe661d9d3cd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dir.c"]}],"references":["https://git.kernel.org/stable/c/da3d241c5b925f17a9d8051d7a9e0d454d8e01f6","https://git.kernel.org/stable/c/3ac9117ba3deab8a5dd22847355f861686f4bee7","https://git.kernel.org/stable/c/5a6baf204610589f8a5b5a1cd69d1fe661d9d3cd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53311.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53311","state":"PUBLISHED","datePublished":"2026-06-26T19:41:04.890Z","dateUpdated":"2026-06-26T19:41:04.890Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.397Z"},"containers":{"cna":{"title":"fuse: fix uninit-value in fuse_dentry_revalidate()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix uninit-value in fuse_dentry_revalidate()\n\nfuse_dentry_revalidate() may be called with a dentry that didn't had\n->d_time initialised.  The issue was found with KMSAN, where lookup_open()\ncalls __d_alloc(), followed by d_revalidate(), as shown below:\n\n=====================================================\nBUG: KMSAN: uninit-value in fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394\n fuse_dentry_revalidate+0x150/0x13d0 fs/fuse/dir.c:394\n d_revalidate fs/namei.c:1030 [inline]\n lookup_open fs/namei.c:4405 [inline]\n open_last_lookups fs/namei.c:4583 [inline]\n path_openat+0x1614/0x64c0 fs/namei.c:4827\n do_file_open+0x2aa/0x680 fs/namei.c:4859\n[...]\n\nUninit was created at:\n slab_post_alloc_hook mm/slub.c:4466 [inline]\n slab_alloc_node mm/slub.c:4788 [inline]\n kmem_cache_alloc_lru_noprof+0x382/0x1280 mm/slub.c:4807\n __d_alloc+0x55/0xa00 fs/dcache.c:1740\n d_alloc_parallel+0x99/0x2740 fs/dcache.c:2604\n lookup_open fs/namei.c:4398 [inline]\n open_last_lookups fs/namei.c:4583 [inline]\n path_openat+0x135f/0x64c0 fs/namei.c:4827\n do_file_open+0x2aa/0x680 fs/namei.c:4859\n[...]\n====================================================="}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2396356a945bb022aff02656f59c2a45d457043f","status":"affected","lessThan":"da3d241c5b925f17a9d8051d7a9e0d454d8e01f6","versionType":"git"},{"version":"2396356a945bb022aff02656f59c2a45d457043f","status":"affected","lessThan":"3ac9117ba3deab8a5dd22847355f861686f4bee7","versionType":"git"},{"version":"2396356a945bb022aff02656f59c2a45d457043f","status":"affected","lessThan":"5a6baf204610589f8a5b5a1cd69d1fe661d9d3cd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/fuse/dir.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/da3d241c5b925f17a9d8051d7a9e0d454d8e01f6"},{"url":"https://git.kernel.org/stable/c/3ac9117ba3deab8a5dd22847355f861686f4bee7"},{"url":"https://git.kernel.org/stable/c/5a6baf204610589f8a5b5a1cd69d1fe661d9d3cd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-26T19:41:04.890Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}