{"id":"CVE-2024-26955","state":"PUBLISHED","title":"nilfs2: prevent kernel bug at submit_bh_wbc()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: prevent kernel bug at submit_bh_wbc()\n\nFix a bug where nilfs_get_block() returns a successful status when\nsearching and inserting the specified block both fail inconsistently.  If\nthis inconsistent behavior is not due to a previously fixed bug, then an\nunexpected race is occurring, so return a temporary error -EAGAIN instead.\n\nThis prevents callers such as __block_write_begin_int() from requesting a\nread into a buffer that is not mapped, which would cause the BUG_ON check\nfor the BH_Mapped flag in submit_bh_wbc() to fail.","publishedAt":"2024-05-01T05:18:51.866Z","updatedAt":"2026-05-11T20:07:37.017Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"91e4c4595fae5e87069e44687ae879091783c183","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"32eaee72e96590a75445c8a6c7c1057673b47e07","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"f0fe7ad5aff4f0fcf988913313c497de85f1e186","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"ca581d237f3b8539c044205bb003de71d75d227c","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"192e9f9078c96be30b31c4b44d6294b24520fce5","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"48d443d200237782dc82e6b60663ec414ef02e39","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"76ffbe911e2798c7296968f5fd72f7bf67207a8d","versionType":"git"},{"version":"1f5abe7e7dbcd83e73212c6cb135a6106cea6a0b","status":"affected","lessThan":"269cdf353b5bdd15f1a079671b0f889113865f20","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nilfs2/inode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"4.19.312","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.274","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.215","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.154","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.84","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.24","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.12","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.3","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nilfs2/inode.c"]}],"references":["https://git.kernel.org/stable/c/91e4c4595fae5e87069e44687ae879091783c183","https://git.kernel.org/stable/c/32eaee72e96590a75445c8a6c7c1057673b47e07","https://git.kernel.org/stable/c/f0fe7ad5aff4f0fcf988913313c497de85f1e186","https://git.kernel.org/stable/c/ca581d237f3b8539c044205bb003de71d75d227c","https://git.kernel.org/stable/c/192e9f9078c96be30b31c4b44d6294b24520fce5","https://git.kernel.org/stable/c/0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c","https://git.kernel.org/stable/c/48d443d200237782dc82e6b60663ec414ef02e39","https://git.kernel.org/stable/c/76ffbe911e2798c7296968f5fd72f7bf67207a8d","https://git.kernel.org/stable/c/269cdf353b5bdd15f1a079671b0f889113865f20","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26955.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26955","state":"PUBLISHED","datePublished":"2024-05-01T05:18:51.866Z","dateUpdated":"2026-05-11T20:07:37.017Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.200Z"},"containers":{"cna":{"title":"nilfs2: prevent kernel bug at submit_bh_wbc()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: prevent kernel bug at submit_bh_wbc()\n\nFix a bug where nilfs_get_block() returns a successful status when\nsearching and inserting the specified block both fail inconsistently.  If\nthis inconsistent behavior is not due to a previously fixed bug, then an\nunexpected race is occurring, so return a temporary error -EAGAIN instead.\n\nThis prevents callers such as __block_write_begin_int() from requesting a\nread into a buffer that is not mapped, which would cause the BUG_ON check\nfor the BH_Mapped flag in submit_bh_wbc() to 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