{"id":"CVE-2022-49408","summary":"ext4: fix memory leak in parse_apply_sb_mount_options()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leak in parse_apply_sb_mount_options()\n\nIf processing the on-disk mount options fails after any memory was\nallocated in the ext4_fs_context, e.g. s_qf_names, then this memory is\nleaked.  Fix this by calling ext4_fc_free() instead of kfree() directly.\n\nReproducer:\n\n    mkfs.ext4 -F /dev/vdc\n    tune2fs /dev/vdc -E mount_opts=usrjquota=file\n    echo clear \u003e /sys/kernel/debug/kmemleak\n    mount /dev/vdc /vdc\n    echo scan \u003e /sys/kernel/debug/kmemleak\n    sleep 5\n    echo scan \u003e /sys/kernel/debug/kmemleak\n    cat /sys/kernel/debug/kmemleak","modified":"2026-04-02T08:27:33.871721Z","published":"2025-02-26T02:12:32.048Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49408.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/9ea3e6168948189cec31d0678d2b55b395f88491"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c069db76ed7b681c69159f44be96d2137e9ca989"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f92ded66e9d0aa20b883a2a5183973abc8f41815"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49408.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49408"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7edfd85b1ffd36593011dec96ab395912a340418"},{"fixed":"9ea3e6168948189cec31d0678d2b55b395f88491"},{"fixed":"f92ded66e9d0aa20b883a2a5183973abc8f41815"},{"fixed":"c069db76ed7b681c69159f44be96d2137e9ca989"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49408.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}