gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52448.json
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- https://nvd.nist.gov/vuln/detail/CVE-2023-52448