CVE-2023-52581

high

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.

References

https://git.kernel.org/stable/c/ef99506eaf1dc31feff1adfcfd68bc5535a22171

https://git.kernel.org/stable/c/cf5000a7787cbc10341091d37245a42c119d26c5

https://git.kernel.org/stable/c/a995a68e8a3b48533e47c856865d109a1f1a9d01

https://git.kernel.org/stable/c/7e5d732e6902eb6a37b35480796838a145ae5f07

https://git.kernel.org/stable/c/7cf055b43756b10aa2b851c927c940f5ed652125

https://git.kernel.org/stable/c/4aea243b6853d06c1d160a9955b759189aa02b14

https://git.kernel.org/stable/c/09c85f2d21ab6b5acba31a037985b13e8e6565b8

Details

Source: Mitre, NVD

Published: 2024-03-02

Updated: 2024-06-16

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High