Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.8, < 4.14.322 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3eMailing ListPatchVendor Advisory
- https://kernel.dance/3e337087c3b5805fe0b8a46ba622a962880b5d64PatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlMailing List
- https://security.netapp.com/advisory/ntap-20230908-0002/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5480Third Party Advisory
- https://www.debian.org/security/2023/dsa-5492Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3eMailing ListPatchVendor Advisory
- https://kernel.dance/3e337087c3b5805fe0b8a46ba622a962880b5d64PatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlMailing List
- https://security.netapp.com/advisory/ntap-20230908-0002/Third Party Advisory
- https://www.debian.org/security/2023/dsa-5480Third Party Advisory
- https://www.debian.org/security/2023/dsa-5492Third Party Advisory
FAQ
What is CVE-2023-3611?
CVE-2023-3611 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 al...
How severe is CVE-2023-3611?
CVE-2023-3611 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-3611?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.