CVE-2022-49849
MEDIUM EPSS 5.6%
Published May 1, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Published May 1, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix match incorrectly in dev_args_match_device syzkaller found a failed assertion: assertion failed: (args->devid != (u64)-1) || args->missing, in fs/btrfs/volumes.c:6921 This can be triggered when we set devid to (u64)-1 by ioctl. In this case, the match of devid will be skipped and the match of device may succeed incorrectly. Patch 562d7b1512f7 introduced this function which is used to match device. This function contains two matching scenarios, we can distinguish them by checking the value of args->missing rather than check whether args->devid and args->uuid is default value.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
5.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Affected Products 6
References 3
- git.kernel.org https://git.kernel.org/stable/c/0fca385d6ebc3cabb20f67bcf8a71f1448bdc001
- git.kernel.org https://git.kernel.org/stable/c/bc6c127c377010f136360552ebf91c2723081c1b
- git.kernel.org https://git.kernel.org/stable/c/c9fe4719c662e0af17eea723cf345e37719fd3c9
Remediation
- git.kernel.org https://git.kernel.org/stable/c/0fca385d6ebc3cabb20f67bcf8a71f1448bdc001
- git.kernel.org https://git.kernel.org/stable/c/bc6c127c377010f136360552ebf91c2723081c1b
- git.kernel.org https://git.kernel.org/stable/c/c9fe4719c662e0af17eea723cf345e37719fd3c9