CVE-2022-34918

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.

Link	Resource
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e6bc1f6cabcd30aba0b11219d8e01b952eacbb6	Mailing List Patch
https://www.openwall.com/lists/oss-security/2022/07/02/3	Exploit Mailing List
https://lore.kernel.org/netfilter-devel/cd9428b6-7ffb-dd22-d949-d86f4869f452@randorisec.fr/T/#u	Exploit Mailing List
http://www.openwall.com/lists/oss-security/2022/07/05/1	Exploit Mailing List
https://www.randorisec.fr/crack-linux-firewall/	Exploit Third Party Advisory
https://www.debian.org/security/2022/dsa-5191	Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/08/06/5	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20220826-0004/	Third Party Advisory
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html	Third Party Advisory
http://packetstormsecurity.com/files/168543/Netfilter-nft_set_elem_init-Heap-Overflow-Privilege-Escalation.html	Exploit Third Party Advisory

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*

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Published : 2022-07-04 09:15

Updated : 2022-10-26 05:05

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NVD link : CVE-2022-34918

Mitre link : CVE-2022-34918

Linux

Linux Kernel

CWE-843