vulnerability
Ubuntu: (CVE-2022-49274): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:C/I:N/A:C) | 2025-02-26 | 2025-03-19 | 2025-03-20 |
Description
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: fix crash when mount with quota enabled
There is a reported crash when mounting ocfs2 with quota enabled.
RIP: 0010:ocfs2_qinfo_lock_res_init+0x44/0x50 [ocfs2]
Call Trace:
ocfs2_local_read_info+0xb9/0x6f0 [ocfs2]
dquot_load_quota_sb+0x216/0x470
dquot_load_quota_inode+0x85/0x100
ocfs2_enable_quotas+0xa0/0x1c0 [ocfs2]
ocfs2_fill_super.cold+0xc8/0x1bf [ocfs2]
mount_bdev+0x185/0x1b0
legacy_get_tree+0x27/0x40
vfs_get_tree+0x25/0xb0
path_mount+0x465/0xac0
__x64_sys_mount+0x103/0x140
It is caused by when initializing dqi_gqlock, the corresponding dqi_type
and dqi_sb are not properly initialized.
This issue is introduced by commit 6c85c2c72819, which wants to avoid
accessing uninitialized variables in error cases. So make global quota
info properly initialized.
Solution(s)
References
- CVE-2022-49274
- https://attackerkb.com/topics/CVE-2022-49274
- URL-https://git.kernel.org/linus/de19433423c7bedabbd4f9a25f7dbc62c5e78921
- URL-https://git.kernel.org/stable/c/01931e1c4e3de5d777253acae64c0e8fd071a1dd
- URL-https://git.kernel.org/stable/c/7c5312fdb1dcfdc1951b018669af88d5d6420b31
- URL-https://git.kernel.org/stable/c/de19433423c7bedabbd4f9a25f7dbc62c5e78921
- URL-https://git.kernel.org/stable/c/eda31f77317647b9fbf889779ee1fb6907651865
- URL-https://www.cve.org/CVERecord?id=CVE-2022-49274
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