CVE-2023-52526: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: fix memory leak of LZMA global compressed deduplication When stressing microLZMA EROFS images with the new global compressed deduplication feature enabled (`-Ededupe`), I found some short-lived temporary pages weren't properly released, which could slowly cause unexpected OOMs hours later. Let's fix it now (LZ4 and DEFLATE don't have this issue.)

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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

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.1 — 6.1.57
linux	linux_kernel	6.2 — 6.5.7
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/6a5a8f0a9740f865693d5aa97a42cc4504538e18 https://git.kernel.org/stable/c/75a5221630fe5aa3fedba7a06be618db0f79ba1e https://git.kernel.org/stable/c/c955751cbf864cf2055117dd3fe7f780d2a57b56 https://git.kernel.org/stable/c/6a5a8f0a9740f865693d5aa97a42cc4504538e18 https://git.kernel.org/stable/c/75a5221630fe5aa3fedba7a06be618db0f79ba1e https://git.kernel.org/stable/c/c955751cbf864cf2055117dd3fe7f780d2a57b56

Frequently Asked Questions

What is CVE-2023-52526? +

In the Linux kernel, the following vulnerability has been resolved: erofs: fix memory leak of LZMA global compressed deduplication When stressing microLZMA EROFS images with the new global compressed deduplication feature enabled (`-Ededupe`), I found some short-lived temporary pages weren't properly released, which could slowly cause unexpected OOMs hours later. Let's fix it now (LZ4 and DEFLATE don't have this issue.) It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-52526? +

CVE-2023-52526 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-2023-52526? +

CVE-2023-52526 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-2023-52526? +

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-2023-52526