CVE-2023-3611
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-3611
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-3611.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-3611
- Downstream
- Related
- Published
- 2023-07-21T21:15:11Z
- Modified
- 2025-08-09T20:01:28Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 qfqchangeagg() 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.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e337087c3b5805fe0b8a46ba622a962880b5d64
- https://kernel.dance/3e337087c3b5805fe0b8a46ba622a962880b5d64
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://security.netapp.com/advisory/ntap-20230908-0002/
- https://www.debian.org/security/2023/dsa-5480
- https://www.debian.org/security/2023/dsa-5492
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html