CVE-2023-52448
gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.20
References 7
git.kernel.org
- stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcde
- stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37
- stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178
- stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414a
- stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05
- stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331a
- stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa