In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
Syzkaller has reported a NULL pointer dereference when accessing rgd->rd_rgl in gfs2_rgrp_dump(). This can happen when creating rgd->rd_gl fails in read_rindex_entry(). Add a NULL pointer check in gfs2_rgrp_dump() to prevent that.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 4.20 (including) | 5.4.268 (excluding) |
| Linux_kernel | Linux | 5.5.0 (including) | 5.10.209 (excluding) |
| Linux_kernel | Linux | 5.11.0 (including) | 5.15.148 (excluding) |
| Linux_kernel | Linux | 5.16.0 (including) | 6.1.75 (excluding) |
| Linux_kernel | Linux | 6.2.0 (including) | 6.6.14 (excluding) |
| Linux_kernel | Linux | 6.7.0 (including) | 6.7.2 (excluding) |