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.

🗓️ 14 Jul 2022 07:00:00Reported by MicrosoftType

Linux kernel up to 5.18.9 has a type confusion in nft_set_elem_init that enables local privilege escalation.

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