{"id":"DEBIAN-CVE-2022-49879","details":"In the Linux kernel, the following vulnerability has been resolved:  ext4: fix BUG_ON() when directory entry has invalid rec_len  The rec_len field in the directory entry has to be a multiple of 4.  A corrupted filesystem image can be used to hit a BUG() in ext4_rec_len_to_disk(), called from make_indexed_dir().   ------------[ cut here ]------------  kernel BUG at fs/ext4/ext4.h:2413!  ...  RIP: 0010:make_indexed_dir+0x53f/0x5f0  ...  Call Trace:   \u003cTASK\u003e   ? add_dirent_to_buf+0x1b2/0x200   ext4_add_entry+0x36e/0x480   ext4_add_nondir+0x2b/0xc0   ext4_create+0x163/0x200   path_openat+0x635/0xe90   do_filp_open+0xb4/0x160   ? __create_object.isra.0+0x1de/0x3b0   ? _raw_spin_unlock+0x12/0x30   do_sys_openat2+0x91/0x150   __x64_sys_open+0x6c/0xa0   do_syscall_64+0x3c/0x80   entry_SYSCALL_64_after_hwframe+0x46/0xb0  The fix simply adds a call to ext4_check_dir_entry() to validate the directory entry, returning -EFSCORRUPTED if the entry is invalid.","modified":"2026-09-01T16:05:33.554470486Z","published":"2025-05-01T15:16:12.857Z","upstream":["CVE-2022-49879"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49879"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49879.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49879.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49879.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}