Bug 1220658 (CVE-2021-47032)

Summary:	VUL-0: CVE-2021-47032: kernel: mt76: mt7915: 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/395479/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-02-29 10:34:10 UTC

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

mt76: mt7915: 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-2021-47032
https://www.cve.org/CVERecord?id=CVE-2021-47032
https://git.kernel.org/stable/c/4a9dcd6efb2a268fc5707dcfb3b0c412975c4462
https://git.kernel.org/stable/c/4e7914ce23306b28d377ec395e00e5fde0e6f96e
https://git.kernel.org/stable/c/7dcf3c04f0aca746517a77433b33d40868ca4749
https://git.kernel.org/stable/c/e2cdc9cb33c5963efe1a7c022753386f9463d1b7

Comment 1 Gabriele Sonnu 2024-02-29 13:38:45 UTC

All affected branches already contain the fix. Closing.

Comment 4 Carlos López 2024-05-28 11:41:46 UTC

Done, closing.