Updated: 2024-09-13 03:31:37.751027
Description:
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug on rename operation of broken directory Syzbot reported that in rename directory operation on broken directory on nilfs2, __block_write_begin_int() called to prepare block write may fail BUG_ON check for access exceeding the folio/page size. This is because nilfs_dotdot(), which gets parent directory reference entry ("..") of the directory to be moved or renamed, does not check consistency enough, and may return location exceeding folio/page size for broken directories. Fix this issue by checking required directory entries ("." and "..") in the first chunk of the directory in nilfs_dotdot().
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | NONE | 0 |
| CVSS Version 3.x | MEDIUM | 5.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated |
|---|---|---|---|---|---|---|---|
| Ubuntu 16.04 ELS | linux | 4.4.0 | 5.5 | MEDIUM | Ignored | 2024-09-13 12:19:00 | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 5.5 | MEDIUM | Not Vulnerable | 2024-10-02 05:29:32 |