CVE-2024-26668: netfilter: nft_limit: reject configurations that cause integer overflow
First published: Tue Apr 02 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_limit: reject configurations that cause integer overflow Reject bogus configs where internal token counter wraps around. This only occurs with very very large requests, such as 17gbyte/s. Its better to reject this rather than having incorrect ratelimit.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.15.149 | 5.15.149 |
| redhat/kernel | <6.1.76 | 6.1.76 |
| redhat/kernel | <6.6.15 | 6.6.15 |
| redhat/kernel | <6.7.3 | 6.7.3 |
| redhat/kernel | <6.8 | 6.8 |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/00c2c29aa36d1d1827c51a3720e9f893a22c7c6a
- https://git.kernel.org/stable/c/79d4efd75e7dbecd855a3b8a63e65f7265f466e1
- https://git.kernel.org/stable/c/9882495d02ecc490604f747437a40626dc9160d0
- https://git.kernel.org/stable/c/bc6e242bb74e2ae616bfd2b250682b738e781c9b
- https://git.kernel.org/stable/c/c9d9eb9c53d37cdebbad56b91e40baf42d5a97aa
- https://launchpad.net/bugs/cve/CVE-2024-26668
- https://access.redhat.com/security/cve/CVE-2024-26668
- https://lore.kernel.org/linux-cve-announce/2024040235-CVE-2024-26668-636e@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2272798
- https://access.redhat.com/errata/RHSA-2024:4823
- https://access.redhat.com/errata/RHSA-2024:4831
- https://access.redhat.com/errata/RHSA-2024:5928
- https://bugzilla.redhat.com/show_bug.cgi?id=2272797
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26668
- https://nvd.nist.gov/vuln/detail/CVE-2024-26668
- https://security-tracker.debian.org/tracker/CVE-2024-26668
- https://ubuntu.com/security/CVE-2024-26668
- https://git.kernel.org/linus/c9d9eb9c53d37cdebbad56b91e40baf42d5a97aa
Frequently Asked Questions
What is the severity of CVE-2024-26668?
CVE-2024-26668 has a medium severity rating due to its potential impact on large packet handling in the Linux kernel.
How do I fix CVE-2024-26668?
To fix CVE-2024-26668, update to kernel versions 5.15.149, 6.1.76, 6.6.15, 6.7.3, 6.8 for Red Hat or suitable versions for Debian as specified.
Which systems are affected by CVE-2024-26668?
CVE-2024-26668 affects various Linux kernel versions for Red Hat and Debian systems, particularly those with specific ranges of the packages.
What exploits are associated with CVE-2024-26668?
CVE-2024-26668 can potentially be exploited in environments where large requests lead to integer overflows in netfilter configurations.
Is CVE-2024-26668 a critical vulnerability?
CVE-2024-26668 is not categorized as critical, but it should be addressed to prevent issues with high traffic scenarios.
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