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prionPRIOn knowledge basePRION:CVE-2022-34918
HistoryJul 04, 2022 - 9:15 p.m.

Type confusion

2022-07-0421:15:00
PRIOn knowledge base
www.prio-n.com
13
linux kernel
type confusion
buffer overflow
escalation of privileges
local attacker
nft set elem init
cve-2022-32250
root access
unprivileged user namespace.

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

79.2%

An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.