1220659 – (CVE-2021-47033) VUL-0: CVE-2021-47033: kernel: mt76: mt7615: fix tx skb dma unmap

Bug 1220659 (CVE-2021-47033) - VUL-0: CVE-2021-47033: kernel: mt76: mt7615: fix tx skb dma unmap

Summary: VUL-0: CVE-2021-47033: kernel: mt76: mt7615: fix tx skb dma unmap

Status:	RESOLVED INVALID

Alias:	CVE-2021-47033

Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents (show other bugs)
Version:	unspecified
Hardware:	Other Other

Priority:	P3 - Medium Severity: Normal
Target Milestone:	---
Assignee:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/395480/
Whiteboard:
Keywords:

Depends on:
Blocks:

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Reported:	2024-02-29 10:34 UTC by SMASH SMASH
Modified:	2024-05-28 11:41 UTC (History)
CC List:	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 2024-02-29 10:34:27 UTC

In the Linux kernel, the following vulnerability has been resolved:

mt76: mt7615: fix tx skb dma unmap

The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47033
https://www.cve.org/CVERecord?id=CVE-2021-47033
https://git.kernel.org/stable/c/75bc5f779a7664d1fc19cb915039439c6e58bb94
https://git.kernel.org/stable/c/821ae236ccea989a1fcc6abfc4d5b74ad4ba39d2
https://git.kernel.org/stable/c/a025277a80add18c33d01042525a74fe5b875f25
https://git.kernel.org/stable/c/ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9

Comment 1 Gabriele Sonnu 2024-02-29 13:47:56 UTC

All affected branches already contain the fix. Closing.

Comment 2 Gabriele Sonnu 2024-03-04 09:13:48 UTC

Reopened, kernel-team please add the CVE reference.

Comment 3 Michal Hocko 2024-04-25 15:34:53 UTC

(In reply to Gabriele Sonnu from comment #2)
> Reopened, kernel-team please add the CVE reference.

Done. Thanks! Bouncing back

Comment 4 Carlos López 2024-05-28 11:41:44 UTC

Done, closing.