Bug 1216255 (CVE-2023-40791)

Summary: VUL-0: CVE-2023-40791: kernel: extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Security Team bot <security-team>
Status: RESOLVED FIXED QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P5 - None CC: gabriele.sonnu, meissner
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/381907/
Whiteboard:
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2023-10-16 06:57:50 UTC 
extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-40791
Comment 1 Gabriele Sonnu 2023-10-16 07:00:00 UTC 
Offending commit (018584697533) is included in SLE15-SP6 and stable branches, that also contain the fixing commit (f443fd5af5dbd531f880d3645d5dd36976cf087f). Nothing to do, closing.