CVE-2023-53622 gfs2: Fix possible data races in gfs2_show_options()

What is CVE-2023-53622?

CVE-2023-53622 is a high-severity vulnerability in Linux kernel, published on 7 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

gfs2: Fix possible data races in gfs2_show_options()

Some fields such as gt_logd_secs of the struct gfs2_tune are accessed without holding the lock gt_spin in gfs2_show_options():

val = sdp->sd_tune.gt_logd_secs; if (val != 30) seq_printf(s, ",commit=%d", val);

And thus can cause data races when gfs2_show_options() and other functions such as gfs2_reconfigure() are concurrently executed:

spin_lock(&gt->gt_spin); gt->gt_logd_secs = newargs->ar_commit;

To fix these possible data races, the lock sdp->sd_tune.gt_spin is acquired before accessing the fields of gfs2_tune and released after these accesses.

Further changes by Andreas:

- Don't hold the spin lock over the seq_printf operations.

Weakness: CWE-362

Which versions are affected by CVE-2023-53622?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-53622?

Apply the vendor's patch.

Is CVE-2023-53622 being exploited?

There is no known exploitation of CVE-2023-53622 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-53622, DEBIAN-CVE-2023-53622, GHSA-7fh7-rm8f-wj9x, UBUNTU-CVE-2023-53622.