{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2024-26773","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.176Z","datePublished":"2024-04-03T17:00:59.757Z","dateUpdated":"2026-05-11T20:03:53.890Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T20:03:53.890Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()\n\nDetermine if the group block bitmap is corrupted before using ac_b_ex in\next4_mb_try_best_found() to avoid allocating blocks from a group with a\ncorrupted block bitmap in the following concurrency and making the\nsituation worse.\n\next4_mb_regular_allocator\n  ext4_lock_group(sb, group)\n  ext4_mb_good_group\n   // check if the group bbitmap is corrupted\n  ext4_mb_complex_scan_group\n   // Scan group gets ac_b_ex but doesn't use it\n  ext4_unlock_group(sb, group)\n                           ext4_mark_group_bitmap_corrupted(group)\n                           // The block bitmap was corrupted during\n                           // the group unlock gap.\n  ext4_mb_try_best_found\n    ext4_lock_group(ac->ac_sb, group)\n    ext4_mb_use_best_found\n      mb_mark_used\n      // Allocating blocks in block bitmap corrupted group"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/mballoc.c"],"versions":[{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"21f8cfe79f776287459343e9cfa6055af61328ea","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"260fc96283c0f594de18a1b045faf6d8fb42874d","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"927794a02169778c9c2e7b25c768ab3ea8c1dc03","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"4c21fa60a6f4606f6214a38f50612b17b2f738f5","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"f97e75fa4e12b0aa0224e83fcbda8853ac2adf36","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"0184747b552d6b5a14db3b7fcc3b792ce64dedd1","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"a2576ae9a35c078e488f2c573e9e6821d651fbbe","status":"affected","versionType":"git"},{"version":"163a203ddb36c36d4a1c942aececda0cc8d06aa7","lessThan":"4530b3660d396a646aad91a787b6ab37cf604b53","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/ext4/mballoc.c"],"versions":[{"version":"3.12","status":"affected"},{"version":"0","lessThan":"3.12","status":"unaffected","versionType":"semver"},{"version":"4.19.308","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.270","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.211","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.150","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.80","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.19","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.7","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","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":"3.12","versionEndExcluding":"4.19.308"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.4.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.10.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.15.150"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.1.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.6.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.7.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.8"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea"},{"url":"https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d"},{"url":"https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03"},{"url":"https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5"},{"url":"https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36"},{"url":"https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1"},{"url":"https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe"},{"url":"https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53"}],"title":"ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-26773","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-04-03T18:50:26.209110Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:49:10.181Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:14:13.512Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","tags":["x_transferred"]}]}]},"dataVersion":"5.2"}