Use After Free Affecting kernel-rt-debug-modules-extra package, versions *
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Test your applications- Snyk ID SNYK-RHEL9-KERNELRTDEBUGMODULESEXTRA-5889696
- published 7 Sep 2023
- disclosed 6 Sep 2023
Introduced: 6 Sep 2023
CVE-2023-3777 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:9 kernel-rt-debug-modules-extra.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-modules-extra package and not the kernel-rt-debug-modules-extra package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.
We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
References
- https://access.redhat.com/security/cve/CVE-2023-3777
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8
- https://kernel.dance/6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8
- https://www.debian.org/security/2023/dsa-5492
- http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html