Description (CNA)
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
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350 before 2144859229c1e74f52d3ea067338d314a83a8afb; affected eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350 before 9f31d8c889d9a4e47bfcc6c4537d0c9f89fe582c; affected eadcd6b5a1eb39866ab8d8a3e4f2e51bc51a2350 before 6acd87d50998ef0afafc441613aeaf5a8f5c9eff |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 5.15.92 through 5.15.*; unaffected 6.1.10 through 6.1.*; unaffected 6.2 through * |
CWE
No CWE identifiers supplied.