{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49879","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-05-01T14:05:17.239Z","datePublished":"2025-05-01T14:10:27.117Z","dateUpdated":"2026-05-11T19:08:30.756Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:08:30.756Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix BUG_ON() when directory entry has invalid rec_len\n\nThe rec_len field in the directory entry has to be a multiple of 4.  A\ncorrupted filesystem image can be used to hit a BUG() in\next4_rec_len_to_disk(), called from make_indexed_dir().\n\n ------------[ cut here ]------------\n kernel BUG at fs/ext4/ext4.h:2413!\n ...\n RIP: 0010:make_indexed_dir+0x53f/0x5f0\n ...\n Call Trace:\n  <TASK>\n  ? add_dirent_to_buf+0x1b2/0x200\n  ext4_add_entry+0x36e/0x480\n  ext4_add_nondir+0x2b/0xc0\n  ext4_create+0x163/0x200\n  path_openat+0x635/0xe90\n  do_filp_open+0xb4/0x160\n  ? __create_object.isra.0+0x1de/0x3b0\n  ? _raw_spin_unlock+0x12/0x30\n  do_sys_openat2+0x91/0x150\n  __x64_sys_open+0x6c/0xa0\n  do_syscall_64+0x3c/0x80\n  entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe fix simply adds a call to ext4_check_dir_entry() to validate the\ndirectory entry, returning -EFSCORRUPTED if the entry is invalid."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/namei.c"],"versions":[{"version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","lessThan":"2fa24d0274fbf913b56ee31f15bc01168669d909","status":"affected","versionType":"git"},{"version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","lessThan":"156451a67b93986fb07c274ef6995ff40766c5ad","status":"affected","versionType":"git"},{"version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","lessThan":"999cff2b6ce3b45c08abf793bf55534777421327","status":"affected","versionType":"git"},{"version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","lessThan":"ce1ee2c8827fb6493e91acbd50f664cf2a972c3d","status":"affected","versionType":"git"},{"version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","lessThan":"17a0bc9bd697f75cfdf9b378d5eb2d7409c91340","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/namei.c"],"versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","status":"unaffected","versionType":"semver"},{"version":"5.4.224","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.154","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.78","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.8","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","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":"2.6.30","versionEndExcluding":"5.4.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.15.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.0.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2fa24d0274fbf913b56ee31f15bc01168669d909"},{"url":"https://git.kernel.org/stable/c/156451a67b93986fb07c274ef6995ff40766c5ad"},{"url":"https://git.kernel.org/stable/c/999cff2b6ce3b45c08abf793bf55534777421327"},{"url":"https://git.kernel.org/stable/c/ce1ee2c8827fb6493e91acbd50f664cf2a972c3d"},{"url":"https://git.kernel.org/stable/c/17a0bc9bd697f75cfdf9b378d5eb2d7409c91340"}],"title":"ext4: fix BUG_ON() when directory entry has invalid rec_len","x_generator":{"engine":"bippy-1.2.0"}}}}