CVE-2023-52448

gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump

MEDIUM

5.5

CVSS Score

Published: February 22, 2024 at 04:21 PM UTC

Updated: June 17, 2026 at 06:42 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.20 ≤ v < 5.10.2094.20 ≤ v < 5.15.1484.20 ≤ v < 5.4.2684.20 ≤ v < 6.1.754.20 ≤ v < 6.6.144.20 ≤ v < 6.7.24.20 ≤ v < 6.85.11.0 ≤ v < 5.15.1485.16.0 ≤ v < 6.1.755.5.0 ≤ v < 5.10.2096.2.0 ≤ v < 6.6.146.7.0 ≤ v < 6.7.24.2072244b6bc752b5c496f09de9a13c18adc314a53c

Vendor states this is fixed in 067a7c48c2c70f05f9460d6f0e8423e234729f05 (fixed)

Vendor states this is fixed in 5c28478af371a1c3fdb570ca67f110e1ae60fc37 (fixed)

Vendor states this is fixed in 8877243beafa7c6bfc42022cbfdf9e39b25bd4fa (fixed)

Vendor states this is fixed in c323efd620c741168c8e0cc6fc0be04ab57e331a (fixed)

Vendor states this is fixed in d69d7804cf9e2ba171a27e5f98bc266f13d0414a (fixed)

Vendor states this is fixed in ee0586d73cbaf0e7058bc640d62a9daf2dfa9178 (fixed)

Vendor states this is fixed in efc8ef87ab9185a23d5676f2f7d986022d91bcde (fixed)

Vendor states this is fixed in 4.20 (unaffected)

Vendor states this is fixed in 5.10.209 (unaffected)

Vendor states this is fixed in 5.15.148 (unaffected)

Vendor states this is fixed in 5.4.268 (unaffected)

Vendor states this is fixed in 6.1.75 (unaffected)