Out-of-bounds Write Affecting kernel-rt-debug-kvm package, versions <0:3.10.0-1160.105.1.rt56.1256.el7
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELRTDEBUGKVM-5806520
- published 26 Jul 2023
- disclosed 21 Jul 2023
Introduced: 21 Jul 2023
CVE-2023-3611 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt-debug-kvm to version 0:3.10.0-1160.105.1.rt56.1256.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2023-3611
- 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