CVE-2023-3611
Severity
7.8HIGH
EPSS
0.0%
top 97.34%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 21
Latest updateSep 26
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages3 packages
Also affects: Debian Linux 10.0, 11.0, 12.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-x5xp-6cpr-4xwx: An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation↗2023-07-21
OSV▶
CVE-2023-3611: An out-of-bounds write vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation↗2023-07-21