CVE-2023-52448
Published: February 23, 2024Last modified: February 23, 2024
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.81-r0) |
| Stream | linux-lts | Fixed (6.6.58-r0) |
References
- https://git.kernel.org/stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05
- https://git.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37
- https://git.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa
- https://git.kernel.org/stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331a
- https://git.kernel.org/stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414a
- https://git.kernel.org/stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178
- https://git.kernel.org/stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcde
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html