CVEvulnerability

CVE-2023-3611

7.8 HIGH Published 2023-07-21 Modified 2026-10-14 Official page ↗
Status
Modified
Published
2023-07-21
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-787

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.

Affected configurations

• linux linux kernel (>= 3.8 < 4.14.322) • linux linux kernel (>= 4.15 < 4.19.291) • linux linux kernel (>= 4.20 < 5.4.253) • linux linux kernel (>= 5.5 < 5.10.188) • linux linux kernel (>= 5.11 < 5.15.121) • linux linux kernel (>= 5.16 < 6.1.40) • linux linux kernel (>= 6.2 < 6.4.5) • linux linux kernel 6.5 • debian debian linux 10.0 • debian debian linux 11.0 • debian debian linux 12.0

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References