Bug 1220659 (CVE-2021-47033)

Summary:	VUL-0: CVE-2021-47033: kernel: mt76: mt7615: fix tx skb dma unmap
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED INVALID	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	gabriele.sonnu, mhocko
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/395480/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

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.