Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix access to uninitialised lock in fc replay path The following kernel trace can be triggered with fstest generic/629 when executed against a filesystem with fast-commit feature enabled: INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 PID: 866 Comm: mount Not tainted 6.10.0+ #11 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-3-gd478f380-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x66/0x90 register_lock_class+0x759/0x7d0 __lock_acquire+0x85/0x2630 ? __find_get_block+0xb4/0x380 lock_acquire+0xd1/0x2d0 ? __ext4_journal_get_write_access+0xd5/0x160 _raw_spin_lock+0x33/0x40 ? __ext4_journal_get_write_access+0xd5/0x160 __ext4_journal_get_write_access+0xd5/0x160 ext4_reserve_inode_write+0x61/0xb0 __ext4_mark_inode_dirty+0x79/0x270 ? ext4_ext_replay_set_iblocks+0x2f8/0x450 ext4_ext_replay_set_iblocks+0x330/0x450 ext4_fc_replay+0x14c8/0x1540 ? jread+0x88/0x2e0 ? rcu_is_watching+0x11/0x40 do_one_pass+0x447/0xd00 jbd2_journal_recover+0x139/0x1b0 jbd2_journal_load+0x96/0x390 ext4_load_and_init_journal+0x253/0xd40 ext4_fill_super+0x2cc6/0x3180 ... In the replay path there's an attempt to lock sbi->s_bdev_wb_lock in function ext4_check_bdev_write_error(). Unfortunately, at this point this spinlock has not been initialized yet. Moving it's initialization to an earlier point in __ext4_fill_super() fixes this splat.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

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CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  5.5 MEDIUM

Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

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Hyperlink	Resource
https://git.kernel.org/stable/c/23dfdb56581ad92a9967bcd720c8c23356af74c1	Patch
https://git.kernel.org/stable/c/b002031d585a14eed511117dda8c6452a804d508	Patch
https://git.kernel.org/stable/c/d157fc20ca5239fd56965a5a8aa1a0e25919891a	Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-908	Use of Uninitialized Resource	NIST

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Change History

2 change records found show changes

Initial Analysis by NIST 10/28/2024 1:12:16 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Added	CWE		NIST CWE-908
Added	CPE Configuration		OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.10.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.3
Changed	Reference Type	https://git.kernel.org/stable/c/23dfdb56581ad92a9967bcd720c8c23356af74c1 No Types Assigned	https://git.kernel.org/stable/c/23dfdb56581ad92a9967bcd720c8c23356af74c1 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/b002031d585a14eed511117dda8c6452a804d508 No Types Assigned	https://git.kernel.org/stable/c/b002031d585a14eed511117dda8c6452a804d508 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/d157fc20ca5239fd56965a5a8aa1a0e25919891a No Types Assigned	https://git.kernel.org/stable/c/d157fc20ca5239fd56965a5a8aa1a0e25919891a Patch

New CVE Received from kernel.org 10/21/2024 3:15:04 PM

Action	Type	Old Value	New Value
Added	Description		Record truncated, showing 500 of 1615 characters. View Entire Change Record In the Linux kernel, the following vulnerability has been resolved: ext4: fix access to uninitialised lock in fc replay path The following kernel trace can be triggered with fstest generic/629 when executed against a filesystem with fast-commit feature enabled: INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 PID: 866 Comm: mount Not tainted 6.10.
Added	Reference		kernel.org https://git.kernel.org/stable/c/23dfdb56581ad92a9967bcd720c8c23356af74c1 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/b002031d585a14eed511117dda8c6452a804d508 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/d157fc20ca5239fd56965a5a8aa1a0e25919891a [No types assigned]