CVE-2023-52757 Affecting gfs2-kmp-default package, versions <6.4.0-150600.23.14.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-SLES156-GFS2KMPDEFAULT-7548893
  • published23 Jul 2024
  • disclosed22 Jul 2024

Introduced: 22 Jul 2024

CVE-2023-52757  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 gfs2-kmp-default to version 6.4.0-150600.23.14.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gfs2-kmp-default package and not the gfs2-kmp-default package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix potential deadlock when releasing mids

All release_mid() callers seem to hold a reference of @mid so there is no need to call kref_put(&mid->refcount, __release_mid) under @server->mid_lock spinlock. If they don't, then an use-after-free bug would have occurred anyways.

By getting rid of such spinlock also fixes a potential deadlock as shown below

CPU 0 CPU 1

cifs_demultiplex_thread() cifs_debug_data_proc_show() release_mid() spin_lock(&server->mid_lock); spin_lock(&cifs_tcp_ses_lock) spin_lock(&server->mid_lock) __release_mid() smb2_find_smb_tcon() spin_lock(&cifs_tcp_ses_lock) deadlock

CVSS Scores

version 3.1