CVE-2020-36694

2023-05-2100:00:00

mitre

www.cve.org

linux kernel

netfilter

use-after-free

iptables

rules replacement

cap_net_admin

unprivileged namespace

5.10

5.12

6.4 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.