Bug 1220897 (CVE-2023-52526) - VUL-0: CVE-2023-52526: kernel: erofs: memory leak of LZMA global compressed deduplication
Summary: VUL-0: CVE-2023-52526: kernel: erofs: memory leak of LZMA global compressed d...
Status: RESOLVED FIXED
Alias: CVE-2023-52526
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/396075/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-52526:4.7:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-03-04 16:11 UTC by SMASH SMASH
Modified: 2024-06-25 18:15 UTC (History)
2 users (show)

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Found By: Security Response Team
Services Priority:
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Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2024-03-04 16:11:15 UTC 
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:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-52526
https://www.cve.org/CVERecord?id=CVE-2023-52526
https://git.kernel.org/stable/c/6a5a8f0a9740f865693d5aa97a42cc4504538e18
https://git.kernel.org/stable/c/75a5221630fe5aa3fedba7a06be618db0f79ba1e
https://git.kernel.org/stable/c/c955751cbf864cf2055117dd3fe7f780d2a57b56
Comment 1 Carlos López 2024-03-04 16:11:49 UTC 
Affects SLE15-SP6. Older branches are not affected, stable and master already have the fix.
Comment 2 Anthony Iliopoulos 2024-03-06 03:44:58 UTC 
commit 75a5221630fe backported to SLE15-SP6, pending merging.

Reassigning back to security.
Comment 10 Thomas Leroy 2024-04-19 12:58:39 UTC 
All done, closing.