Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memleak when more than 255 elements expired When more than 255 elements expired we're supposed to switch to a new gc container structure. This never happens: u8 type will wrap before reaching the boundary and nft_trans_gc_space() always returns true. This means we recycle the initial gc container structure and lose track of the elements that came before. While at it, don't deref 'gc' after we've passed it to call_rcu.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.5, < 6.5.6 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8Patch
- https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14Patch
- https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125Patch
- https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07Patch
- https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01Patch
- https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5Patch
- https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171Patch
- https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8Patch
- https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14Patch
- https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125Patch
- https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07Patch
- https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01Patch
- https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5Patch
- https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171Patch
FAQ
What is CVE-2023-52581?
CVE-2023-52581 is a vulnerability with a CVSS score of 6.3 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memleak when more than 255 elements expired When more than 255 elements expired we're supposed to switch...
How severe is CVE-2023-52581?
CVE-2023-52581 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52581?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.