Bug 1227810 (CVE-2024-40956)

Summary: VUL-0: CVE-2024-40956: kernel: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Kernel Bugs <kernel-bugs>
Status: NEW --- QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P3 - Medium CC: gianluca.gabrielli
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/413883/
Whiteboard:
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-07-15 13:15:49 UTC 
In the Linux kernel, the following vulnerability has been resolved:

dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list

Use list_for_each_entry_safe() to allow iterating through the list and
deleting the entry in the iteration process. The descriptor is freed via
idxd_desc_complete() and there's a slight chance may cause issue for
the list iterator when the descriptor is reused by another thread
without it being deleted from the list.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40956
https://www.cve.org/CVERecord?id=CVE-2024-40956
https://git.kernel.org/stable/c/1b08bf5a17c66ab7dbb628df5344da53c8e7ab33
https://git.kernel.org/stable/c/83163667d881100a485b6c2daa30301b7f68d9b5
https://git.kernel.org/stable/c/a14968921486793f2a956086895c3793761309dd
https://git.kernel.org/stable/c/e3215deca4520773cd2b155bed164c12365149a7
https://git.kernel.org/stable/c/faa35db78b058a2ab6e074ee283f69fa398c36a8
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40956.mbox