CVE-2023-52526 Information

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.)

Reference

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