{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"2fa24d0274fbf913b56ee31f15bc01168669d909","status":"affected","version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","versionType":"git"},{"lessThan":"156451a67b93986fb07c274ef6995ff40766c5ad","status":"affected","version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","versionType":"git"},{"lessThan":"999cff2b6ce3b45c08abf793bf55534777421327","status":"affected","version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","versionType":"git"},{"lessThan":"ce1ee2c8827fb6493e91acbd50f664cf2a972c3d","status":"affected","version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","versionType":"git"},{"lessThan":"17a0bc9bd697f75cfdf9b378d5eb2d7409c91340","status":"affected","version":"3d0518f4758eca4339e75e5b9dbb7e06a5ce08b4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"2.6.30"},{"lessThan":"2.6.30","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.224","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.154","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.78","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2022-49879","cwes":[],"description":"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.","epss":{"date":"2026-11-05","percentile":0.12402,"score":0.00218},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793908810635,"publishedAt":1746108627117,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/2fa24d0274fbf913b56ee31f15bc01168669d909"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/156451a67b93986fb07c274ef6995ff40766c5ad"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/999cff2b6ce3b45c08abf793bf55534777421327"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ce1ee2c8827fb6493e91acbd50f664cf2a972c3d"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/17a0bc9bd697f75cfdf9b378d5eb2d7409c91340"}],"remediation":[],"revision":"fb49ee9dfbaaae680b5e3adcdd1b51104e401988c7c6b8855380e6e5d7e4ae06","sources":[{"modifiedAt":1793908810635,"name":"CNA: Linux","retrievedAt":1793909473371,"url":"https://www.cve.org/CVERecord?id=CVE-2022-49879"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793909484508,"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-49879"}],"ssvc":{"assessedAt":1793908266646,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"ext4: fix BUG_ON() when directory entry has invalid rec_len","updatedAt":1793909484508}