CVE-2023-52448

low-risk
Published 2024-02-22

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.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (15)

Patch https://git.kernel.org/stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05
Patch https://git.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37
Patch https://git.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa
Patch https://git.kernel.org/stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331a
Patch https://git.kernel.org/stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414a
Patch https://git.kernel.org/stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178
Patch https://git.kernel.org/stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcde
Patch https://git.kernel.org/stable/c/067a7c48c2c70f05f9460d6f0e8423e234729f05
Patch https://git.kernel.org/stable/c/5c28478af371a1c3fdb570ca67f110e1ae60fc37
Patch https://git.kernel.org/stable/c/8877243beafa7c6bfc42022cbfdf9e39b25bd4fa
Patch https://git.kernel.org/stable/c/c323efd620c741168c8e0cc6fc0be04ab57e331a
Patch https://git.kernel.org/stable/c/d69d7804cf9e2ba171a27e5f98bc266f13d0414a
Patch https://git.kernel.org/stable/c/ee0586d73cbaf0e7058bc640d62a9daf2dfa9178
Patch https://git.kernel.org/stable/c/efc8ef87ab9185a23d5676f2f7d986022d91bcde
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal