CVE-2023-52526

MEDIUM

Linux Kernel - Use-After-Free in EROFS LZMA Global Compressed Deduplication

Title source: llm

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.)

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/6a5a8f0a9740f865693d5aa97a42cc4504538e18

Patch

https://git.kernel.org/stable/c/c955751cbf864cf2055117dd3fe7f780d2a57b56

Patch

https://git.kernel.org/stable/c/75a5221630fe5aa3fedba7a06be618db0f79ba1e

Scores

CVSS v3 5.5

EPSS 0.0022

EPSS Percentile 12.6%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (10)

Linux/Linux < 6.1

Linux/Linux 5c2a64252c5dc4cfe78e5b2a531c118894e3d155 - 6a5a8f0a9740f865693d5aa97a42cc4504538e18

Linux/Linux 5c2a64252c5dc4cfe78e5b2a531c118894e3d155 - 75a5221630fe5aa3fedba7a06be618db0f79ba1e

Linux/Linux 5c2a64252c5dc4cfe78e5b2a531c118894e3d155 - c955751cbf864cf2055117dd3fe7f780d2a57b56

Linux/Linux 6.1

Linux/Linux 6.1.57 - 6.1.*

Linux/Linux 6.5.7 - 6.5.*

Linux/Linux 6.6

linux/linux_kernel 6.6 rc1 (4 CPE variants)

linux/linux_kernel 6.1 - 6.1.57

Published Mar 02, 2024

Tracked Since Feb 18, 2026