CVE-2023-3611
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJul 21, 2023
First seenJul 21, 2023
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- linux linux_kernel4.14.322, 4.19.291, 5.4.253, 5.10.188, 5.15.121, 6.1.40, 6.4.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.8 ≤ v < 4.14.322, 4.15 ≤ v < 4.19.291, 4.20 ≤ v < 5.4.253, 5.5 ≤ v < 5.10.188, 5.11 ≤ v < 5.15.121, 5.16 ≤ v < 6.1.40, 6.2 ≤ v < 6.4.5, 6.5 | 4.14.322, 4.19.291, 5.4.253, 5.10.188, 5.15.121, 6.1.40, 6.4.5 |
| debian debian_linux | 10.0, 11.0, 12.0 | — |
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