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CVE-2023-31436

Good to know:

Date: April 27, 2023

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

Language: C

Severity Score

5.4

Related Resources (12)

Url: https://www.spinics.net/lists/stable-commits/msg294885.html

Url: http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html

Url: https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html

Url: https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d

Url: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13

Url: https://www.debian.org/security/2023/dsa-5402

Url: http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2023-31436

Url: https://security.netapp.com/advisory/ntap-20230609-0001/

Url: http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html

Url: https://access.redhat.com/security/cve/CVE-2023-31436

Url: https://www.mend.io/vulnerability-database/CVE-2023-31436

Severity Score

5.4

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

Upgrade Version

Upgrade to version v4.14.314,v4.19.282,v5.10.179,v5.15.109,v5.4.242,v6.1.26,v6.2.13

CVSS v3.1

Base Score:	5.4
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	REQUIRED
Scope (S):	CHANGED
Confidentiality (C):	LOW
Integrity (I):	LOW
Availability (A):	NONE

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