Bug 1219402 (CVE-2021-33630)

Summary:	VUL-0: CVE-2021-33630: kernel-source,kernel-source-azure,kernel-source-rt: net/sched: cbs NULL pointer dereference when offloading is enabled
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:	jack, mhocko, thomas.leroy
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/391669/
Whiteboard:	CVSSv3.1:SUSE:CVE-2021-33630:5.5:(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 2024-01-31 10:32:38 UTC

NULL Pointer Dereference vulnerability in openEuler kernel on Linux (network modules) allows Pointer Manipulation. This vulnerability is associated with program files net/sched/sch_cbs.C.

This issue affects openEuler kernel: from 4.19.90 before 4.19.90-2401.3.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-33630
https://www.cve.org/CVERecord?id=CVE-2021-33630
https://gitee.com/src-openeuler/kernel/pulls/1389
https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1030
https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1031
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e8b9bfa110896f95d602d8c98d5f9d67e41d78c
https://seclists.org/oss-sec/2024/q1/65
http://www.openwall.com/lists/oss-security/2024/01/30/3
http://www.openwall.com/lists/oss-security/2024/01/30/4
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c099c4fdc438014d5893629e70a8ba934433ee8
http://www.openwall.com/lists/oss-security/2024/01/30/5
https://bugzilla.redhat.com/show_bug.cgi?id=2261974
http://www.openwall.com/lists/oss-security/2024/01/30/10
http://www.openwall.com/lists/oss-security/2024/01/30/9

Comment 1 Thomas Leroy 2024-01-31 10:38:45 UTC

CVE-2021-33630 is related to 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e8b9bfa110896f95d602d8c98d5f9d67e41d78c

SLE15-SP6, cve/linux-5.14 and stable should contain the fix.
cve/linux-5.3 contains the buggy commit but not the fix

Comment 2 Jan Kara 2024-02-01 18:27:06 UTC

Michal, something for you?

Comment 4 Thomas Leroy 2024-07-05 15:21:03 UTC

All done, closing.