Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2023-52760

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
21/05/2024
Last modified:
03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> gfs2: Fix slab-use-after-free in gfs2_qd_dealloc<br /> <br /> In gfs2_put_super(), whether withdrawn or not, the quota should<br /> be cleaned up by gfs2_quota_cleanup().<br /> <br /> Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu<br /> callback) has run for all gfs2_quota_data objects, resulting in<br /> use-after-free.<br /> <br /> Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called<br /> by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling<br /> gfs2_make_fs_ro(), there is no need to call them again.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.1.97 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools