Bug 1224969 (CVE-2021-47306)

Summary:	VUL-0: CVE-2021-47306: kernel: net: fddi: fix UAF in fza_probe
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	gabriele.sonnu, mkoutny
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/406940/
Whiteboard:	CVSSv3.1:SUSE:CVE-2021-47306:5.5:(AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-05-22 12:35:08 UTC

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

net: fddi: fix UAF in fza_probe

fp is netdev private data and it cannot be
used after free_netdev() call. Using fp after free_netdev()
can cause UAF bug. Fix it by moving free_netdev() after error message.

TURBOchannel adapter")

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47306
https://www.cve.org/CVERecord?id=CVE-2021-47306
https://git.kernel.org/stable/c/04b06716838bfc26742dbed3ae1d3697fe5317ee
https://git.kernel.org/stable/c/bdfbb51f7a437ae8ea91317a5c133ec13adf3c47
https://git.kernel.org/stable/c/deb7178eb940e2c5caca1b1db084a69b2e59b4c9
https://git.kernel.org/stable/c/f33605908a9b6063525e9f68e62d739948c5fccf
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47306.mbox