CVE-2022-49747
- Source
- https://cve.org/CVERecord?id=CVE-2022-49747
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49747.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49747
- Downstream
- Published
- 2025-03-27T16:42:57.094Z
- Modified
- 2026-03-20T11:47:11.659795Z
- Summary
- erofs/zmap.c: Fix incorrect offset calculation
- Details
-
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 WARNON in iomapiter_done().
Fix that, and describe it in comments.
This was reported as a crash by syzbot under an issue about a warning encountered in iomapiterdone(), 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
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49747.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/2144859229c1e74f52d3ea067338d314a83a8afb
- https://git.kernel.org/stable/c/6acd87d50998ef0afafc441613aeaf5a8f5c9eff
- https://git.kernel.org/stable/c/9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49747.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49747
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git