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PRIOn knowledge basePRION:CVE-2020-36694HistoryMay 21, 2023 - 11:15 p.m.
Double free
2023-05-2123:15:00
PRIOn knowledge base
www.prio-n.com
9
netfilter
linux kernel
use-after-free
packet processing
concurrent
iptables rules
cap_net_admin
unprivileged namespace
vulnerability
nvd
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| linux_kernel | lt | 5.10 |
References
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc00bcaa589914096edef7fb87ca5cee4a166b5c
security.netapp.com/advisory/ntap-20230622-0005/
syzkaller.appspot.com/bug?id=0c4fd9c6aa04ec116d01e915d3b186f71a212cb2
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