{"id":"CVE-2024-50014","revision":"b18ac4ae00ad48dbae102b2c9691431c","records":[{"revision":"b18ac4ae00ad48dbae102b2c9691431c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-50014","aliases":[],"title":"ext4: fix access to uninitialised lock in fc replay path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix access to uninitialised lock in fc replay path\n\nThe following kernel trace can be triggered with fstest generic/629 when\nexecuted against a filesystem with fast-commit feature enabled:\n\nINFO: trying to register non-static key.\nThe code is fine but needs lockdep annotation, or maybe\nyou didn't initialize this object before use?\nturning off the locking correctness validator.\nCPU: 0 PID: 866 Comm: mount Not tainted 6.10.0+ #11\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-3-gd478f380-prebuilt.qemu.org 04/01/2014\nCall Trace:\n <TASK>\n dump_stack_lvl+0x66/0x90\n register_lock_class+0x759/0x7d0\n __lock_acquire+0x85/0x2630\n ? __find_get_block+0xb4/0x380\n lock_acquire+0xd1/0x2d0\n ? __ext4_journal_get_write_access+0xd5/0x160\n _raw_spin_lock+0x33/0x40\n ? __ext4_journal_get_write_access+0xd5/0x160\n __ext4_journal_get_write_access+0xd5/0x160\n ext4_reserve_inode_write+0x61/0xb0\n __ext4_mark_inode_dirty+0x79/0x270\n ? ext4_ext_replay_set_iblocks+0x2f8/0x450\n ext4_ext_replay_set_iblocks+0x330/0x450\n ext4_fc_replay+0x14c8/0x1540\n ? jread+0x88/0x2e0\n ? rcu_is_watching+0x11/0x40\n do_one_pass+0x447/0xd00\n jbd2_journal_recover+0x139/0x1b0\n jbd2_journal_load+0x96/0x390\n ext4_load_and_init_journal+0x253/0xd40\n ext4_fill_super+0x2cc6/0x3180\n...\n\nIn the replay path there's an attempt to lock sbi->s_bdev_wb_lock in\nfunction ext4_check_bdev_write_error().  Unfortunately, at this point this\nspinlock has not been initialized yet.  Moving it's initialization to an\nearlier point in __ext4_fill_super() fixes this splat.","state":0,"publishedAt":"2024-10-21T18:54:05.764+00:00","modifiedAt":"2026-10-15T00:56:03.907+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/ext4/super.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"01efe93a5aa20a19b390426718dc214898a7c2ec\",\n                            \"lessThan\": \"6e35f560daebe40264c95e9a1ab03110d4997df6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"01efe93a5aa20a19b390426718dc214898a7c2ec\",\n                            \"lessThan\": \"d157fc20ca5239fd56965a5a8aa1a0e25919891a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"01efe93a5aa20a19b390426718dc214898a7c2ec\",\n                            \"lessThan\": \"b002031d585a14eed511117dda8c6452a804d508\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"01efe93a5aa20a19b390426718dc214898a7c2ec\",\n                            \"lessThan\": \"23dfdb56581ad92a9967bcd720c8c23356af74c1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/ext4/super.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.75\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.10.14\",\n                            \"lessThanOrEqual\": \"6.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.3\",\n                            \"lessThanOrEqual\": \"6.11.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/6e35f560daebe40264c95e9a1ab03110d4997df6","https://git.kernel.org/stable/c/d157fc20ca5239fd56965a5a8aa1a0e25919891a","https://git.kernel.org/stable/c/b002031d585a14eed511117dda8c6452a804d508","https://git.kernel.org/stable/c/23dfdb56581ad92a9967bcd720c8c23356af74c1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-50014","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-50014","identifiers":["CVE-2024-50014"]},"retained":false,"historicalAffected":[]}],"coverage":[]}