CVE-2023-3611

CVE Details

Release Date:	2023-07-21
Impact:	Important	What is this?

Description

An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. The qfq_change_agg() function in net/sched/sch_qfq.c allows an out-of-bounds write because lmax is updated according to packet sizes without bounds checks. We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.

See more information about CVE-2023-3611 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (kernel)	ELSA-2024-1831	2024-04-22
Oracle Linux version 6 (kernel-uek)	ELSA-2023-12842	2023-10-03
Oracle Linux version 7 (kernel)	ELSA-2023-7423	2023-11-22
Oracle Linux version 7 (kernel-uek)	ELSA-2023-12842	2023-10-03
Oracle Linux version 8 (kernel)	ELSA-2023-7077	2023-11-17
Oracle VM version 3 (kernel-uek)	OVMSA-2023-0023	2023-11-02