CVE-2023-5197: Use-after-free in Linux kernel's netfilter: nf_tables component
First published: Tue Sep 26 2023(Updated: )
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free. We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325.
Credit: cve-coordination@google.com cve-coordination@google.com cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=5.9.0<6.6 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.6-1 6.12.9-1 |
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Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f15f29fd4779be8a418b66e9d52979bb6d6c2325
- https://kernel.dance/f15f29fd4779be8a418b66e9d52979bb6d6c2325
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- https://launchpad.net/bugs/cve/CVE-2023-5197
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5197
- https://nvd.nist.gov/vuln/detail/CVE-2023-5197
- https://security-tracker.debian.org/tracker/CVE-2023-5197
- https://ubuntu.com/security/CVE-2023-5197
- https://git.kernel.org/linus/f15f29fd4779be8a418b66e9d52979bb6d6c2325
Frequently Asked Questions
What is the vulnerability ID for this use-after-free vulnerability in the Linux kernel?
The vulnerability ID for this use-after-free vulnerability in the Linux kernel is CVE-2023-5197.
What is the affected software of this vulnerability?
The affected software is the Linux kernel with versions from 5.9.0 to 6.6.
What is the severity of this vulnerability?
The severity of this vulnerability is high with a severity value of 7.8.
How can this vulnerability be exploited?
This vulnerability can be exploited to achieve local privilege escalation.
How can I fix this use-after-free vulnerability in the Linux kernel?
We recommend upgrading to a version past commit f15f29fd4779b to fix this vulnerability.
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