CVE-2022-49747
MEDIUM EPSS 7.3%
Published Mar 27, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Published Mar 27, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
Description
In the Linux kernel, the following vulnerability has been resolved: erofs/zmap.c: Fix incorrect offset calculation Effective offset to add to length was being incorrectly calculated, which resulted in iomap->length being set to 0, triggering a WARN_ON in iomap_iter_done(). Fix that, and describe it in comments. This was reported as a crash by syzbot under an issue about a warning encountered in iomap_iter_done(), but unrelated to erofs. C reproducer: https://syzkaller.appspot.com/text?tag=ReproC&x=1037a6b2880000 Kernel config: https://syzkaller.appspot.com/text?tag=KernelConfig&x=e2021a61197ebe02 Dashboard link: https://syzkaller.appspot.com/bug?extid=a8e049cd3abd342936b6
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
7.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Affected Products 6
References 3
- git.kernel.org https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb
- git.kernel.org https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff
- git.kernel.org https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c
Remediation
- git.kernel.org https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb
- git.kernel.org https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff
- git.kernel.org https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c