Bug 1227810 (CVE-2024-40956) - VUL-0: CVE-2024-40956: kernel: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list
Summary: VUL-0: CVE-2024-40956: kernel: dmaengine: idxd: Fix possible Use-After-Free i...
Status: NEW
Alias: CVE-2024-40956
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Kernel Bugs
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/413883/
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Reported: 2024-07-15 13:15 UTC by SMASH SMASH
Modified: 2024-07-15 14:15 UTC (History)
1 user (show)

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Found By: Security Response Team
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Marketing QA Status: ---
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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