Bug 1224890 (CVE-2021-47286) - VUL-0: CVE-2021-47286: kernel: bus: mhi: core: Validate channel ID when processing command completions
Summary: VUL-0: CVE-2021-47286: kernel: bus: mhi: core: Validate channel ID when proce...
Status: RESOLVED INVALID
Alias: CVE-2021-47286
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/406919/
Whiteboard: CVSSv3.1:SUSE:CVE-2021-47286:5.9:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-22 10:20 UTC by SMASH SMASH
Modified: 2024-05-28 11:32 UTC (History)
2 users (show)

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

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Description SMASH SMASH 2024-05-22 10:20:21 UTC 
In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: core: Validate channel ID when processing command completions

MHI reads the channel ID from the event ring element sent by the
device which can be any value between 0 and 255. In order to
prevent any out of bound accesses, add a check against the maximum
number of channels supported by the controller and those channels
not configured yet so as to skip processing of that event ring
element.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47286
https://www.cve.org/CVERecord?id=CVE-2021-47286
https://git.kernel.org/stable/c/3efec3b4b16fc7af25676a94230a8ab2a3bb867c
https://git.kernel.org/stable/c/546362a9ef2ef40b57c6605f14e88ced507f8dd0
https://git.kernel.org/stable/c/aed4f5b51aba41e2afd7cfda20a0571a6a67dfe9
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47286.mbox
Comment 2 Michal Hocko 2024-05-23 16:45:19 UTC 
Nothing to be done
Comment 3 Carlos López 2024-05-28 11:32:39 UTC 
Nothing to do, closing.