Double Free Affecting kernel-rt-kvm package, versions <0:3.10.0-1160.102.1.rt56.1250.el7
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELRTKVM-5804582
- published 25 Jul 2023
- disclosed 21 Jul 2023
Introduced: 21 Jul 2023
CVE-2023-3609 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt-kvm to version 0:3.10.0-1160.102.1.rt56.1250.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.
If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.
We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.
References
- https://access.redhat.com/security/cve/CVE-2023-3609
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=04c55383fa5689357bcdd2c8036725a55ed632bc
- https://kernel.dance/04c55383fa5689357bcdd2c8036725a55ed632bc
- https://security.netapp.com/advisory/ntap-20230818-0005/
- https://www.debian.org/security/2023/dsa-5480
- http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html