CVE-2023-3611
Assigner: Google
Published: 2023-07-21T20:49:10.812Z
State: PUBLISHED
affected: defaultStatus: unaffected
packageName: kernel
product: Kernel
repo: https://git.kernel.org
vendor: Linux
versions: lessThan: 6.5
status: affected
version: 3.8
versionType: custom
credits: type: finder
user: 00000000-0000-4000-9000-000000000000
value: Lion
datePublic: 2023-07-13T09:11:00.000Z
descriptions: supportingMedia: base64: no
type: text/html
value: <p>An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation.</p><p>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.</p><p>We recommend upgrading past commit 3e337087c3b5805fe0b8a46ba622a962880b5d64.</p>
value: 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.


impacts: capecId: CAPEC-233
descriptions: value: CAPEC-233 Privilege Escalation
metrics: cvssV3_1: attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 7.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
version: 3.1
format: CVSS
scenarios: value: GENERAL
problemTypes: descriptions: cweId: CWE-787
description: CWE-787 Out-of-bounds Write
type: CWE
source: discovery: EXTERNAL
title: Out-of-bounds write in Linux kernel's net/sched: sch_qfq component
x_generator: engine: Vulnogram 0.1.0-dev