CVE-2024-38663: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from resetting io stat Since commit 3b8cc6298724 ("blk-cgroup: Optimize blkcg_rstat_flush()"), each iostat instance is added to blkcg percpu list, so blkcg_reset_stats() can't reset the stat instance by memset(), otherwise the llist may be corrupted. Fix the issue by only resetting the counter part.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.2 — 6.6.33
linux	linux_kernel	6.7 — 6.9.4

References

Advisories & Patches

https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791 https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9 https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24 https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791 https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9 https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24

Frequently Asked Questions

What is CVE-2024-38663? +

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from resetting io stat Since commit 3b8cc6298724 ("blk-cgroup: Optimize blkcg_rstat_flush()"), each iostat instance is added to blkcg percpu list, so blkcg_reset_stats() can't reset the stat instance by memset(), otherwise the llist may be corrupted. Fix the issue by only resetting the counter part. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-38663? +

CVE-2024-38663 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-38663? +

CVE-2024-38663 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-2024-38663? +

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-2024-38663