CVE-2023-53622: linux kernel — Fix

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.

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CVSS v3.1 Score

7.0

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
linux	linux_kernel	2.6.31 — 4.14.324
linux	linux_kernel	4.15 — 4.19.293
linux	linux_kernel	4.20 — 5.4.255
linux	linux_kernel	5.5 — 5.10.192
linux	linux_kernel	5.11 — 5.15.128
linux	linux_kernel	5.16 — 6.1.47
linux	linux_kernel	6.2 — 6.4.12

References

Advisories & Patches

https://git.kernel.org/stable/c/235a5ae73cea29109a3e06f100493f17857e6a93 https://git.kernel.org/stable/c/42077d4de49e4d9c773c97c42d5383b4899a8f9d https://git.kernel.org/stable/c/6fa0a72cbbe45db4ed967a51f9e6f4e3afe61d20 https://git.kernel.org/stable/c/7c5b2649f6a37d45bfb7abf34c9b71d08677139f https://git.kernel.org/stable/c/7e5bbeb7eb813bb2568e1d5d02587df943272e57 https://git.kernel.org/stable/c/85e888150075cb221270b64bf772341fc6bd11d9 https://git.kernel.org/stable/c/a4f71523ed2123d63b431cc0cea4e9f363a0f054 https://git.kernel.org/stable/c/b4a7ab57effbed42624842f2ab2a49b177c21a47

Frequently Asked Questions

What is CVE-2023-53622? +

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. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2023-53622? +

CVE-2023-53622 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-53622? +

CVE-2023-53622 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53622? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-53622