{"id":"CVE-2026-23423","state":"PUBLISHED","title":"btrfs: free pages on error in btrfs_uring_read_extent()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: free pages on error in btrfs_uring_read_extent()\n\nIn this function the 'pages' object is never freed in the hopes that it is\npicked up by btrfs_uring_read_finished() whenever that executes in the\nfuture. But that's just the happy path. Along the way previous\nallocations might have gone wrong, or we might not get -EIOCBQUEUED from\nbtrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a\ncleanup section that frees all memory allocated by this function without\nassuming any deferred execution, and this also needs to happen for the\n'pages' allocation.","publishedAt":"2026-04-03T13:24:31.966Z","updatedAt":"2026-05-11T22:06:37.271Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"34310c442e175f286b4c06ab5caa4e0b267ea31c","status":"affected","lessThan":"d4f210de01eaccac61eee657f676045ef9771d07","versionType":"git"},{"version":"34310c442e175f286b4c06ab5caa4e0b267ea31c","status":"affected","lessThan":"628895890b0c9ac9129129e89455da7db95ba343","versionType":"git"},{"version":"34310c442e175f286b4c06ab5caa4e0b267ea31c","status":"affected","lessThan":"3f501412f2079ca14bf68a18d80a2b7a823f1f64","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/ioctl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/ioctl.c"]}],"references":["https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07","https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343","https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23423.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23423","state":"PUBLISHED","datePublished":"2026-04-03T13:24:31.966Z","dateUpdated":"2026-05-11T22:06:37.271Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:46.015Z"},"containers":{"cna":{"title":"btrfs: free pages on error in btrfs_uring_read_extent()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: free pages on error in btrfs_uring_read_extent()\n\nIn this function the 'pages' object is never freed in the hopes that it is\npicked up by btrfs_uring_read_finished() whenever that executes in the\nfuture. But that's just the happy path. Along the way previous\nallocations might have gone wrong, or we might not get -EIOCBQUEUED from\nbtrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a\ncleanup section that frees all memory allocated by this function without\nassuming any deferred execution, and this also needs to happen for the\n'pages' allocation."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"34310c442e175f286b4c06ab5caa4e0b267ea31c","status":"affected","lessThan":"d4f210de01eaccac61eee657f676045ef9771d07","versionType":"git"},{"version":"34310c442e175f286b4c06ab5caa4e0b267ea31c","status":"affected","lessThan":"628895890b0c9ac9129129e89455da7db95ba343","versionType":"git"},{"version":"34310c442e175f286b4c06ab5caa4e0b267ea31c","status":"affected","lessThan":"3f501412f2079ca14bf68a18d80a2b7a823f1f64","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/ioctl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/btrfs/ioctl.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07"},{"url":"https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343"},{"url":"https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:06:37.271Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}