Bug 1220762 (CVE-2021-47050)

Summary:	VUL-0: CVE-2021-47050: kernel: memory: renesas-rpc-if: fix possible NULL pointer dereference of resource
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	gabriele.sonnu, mhocko, security-team
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/395497/
Whiteboard:	CVSSv3.1:SUSE:CVE-2021-47050:4.4:(AV:L/AC:L/PR:H/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 2024-03-01 11:08:55 UTC

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

memory: renesas-rpc-if: fix possible NULL pointer dereference of resource

The platform_get_resource_byname() can return NULL which would be
immediately dereferenced by resource_size().  Instead dereference it
after validating the resource.

Addresses-Coverity: Dereference null return value

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47050
https://www.cve.org/CVERecord?id=CVE-2021-47050
https://git.kernel.org/stable/c/59e27d7c94aa02da039b000d33c304c179395801
https://git.kernel.org/stable/c/71bcc1b4a1743534d8abdcb57ff912e6bc390438
https://git.kernel.org/stable/c/a74cb41af7dbe019e4096171f8bc641c7ce910ad
https://git.kernel.org/stable/c/e16acc3a37f09e18835dc5d8014942c2ef6ca957
https://bugzilla.redhat.com/show_bug.cgi?id=2266735

Comment 1 Gabriele Sonnu 2024-03-01 11:15:52 UTC

All affected branches already contain the fix. Closing.

Comment 7 Thomas Leroy 2024-04-19 13:02:09 UTC

All done, closing.