Updated: 2025-09-28 04:01:55.444154
Description:
In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add validity check for db_maxag and db_agpref Both db_maxag and db_agpref are used as the index of the db_agfree array, but there is currently no validity check for db_maxag and db_agpref, which can lead to errors. The following is related bug reported by Syzbot: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20 index 7936 is out of range for type 'atomic_t[128]' Add checking that the values of db_maxag and db_agpref are valid indexes for the db_agfree array.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | HIGH | 7.8 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7.8 | HIGH | Not Vulnerable | 2025-09-30 16:02:16 | CONFIG_JFS_FS is not set | |
| CentOS 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2025-10-02 11:59:35 | ||
| CentOS 8.4 ELS | kernel | 4.18.0 | 7.8 | HIGH | Released | CLSA-2025:1763731262 | 2025-11-21 21:52:42 | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 7.8 | HIGH | Released | CLSA-2025:1763734783 | 2025-11-21 21:52:43 | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Not Vulnerable | 2025-11-02 08:10:33 | ||
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 7.8 | HIGH | Released | CLSA-2025:1764027437 | 2025-11-25 02:52:16 | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 7.8 | HIGH | Released | CLSA-2025:1763991095 | 2025-11-24 17:14:47 | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 7.8 | HIGH | Released | CLSA-2025:1763990271 | 2025-11-24 17:14:49 |