Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2022-34918

CVE-2022-34918HIGH

n/a n/a — An issue was discovered in the Linux kernel through 5.18.9.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0545   92.6     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Jul 4   Reserved by mitre
  Jul 4   Published (CNA: mitre)
  Oct 14  ENRICHED — CVE-2022-34918. Received CVSS 7.8 and CPE data from NVD.
  Oct 14  EXPLOIT PUBLISHED — CVE-2022-34918. Public exploit reference added.

CWE-843 · CNA: mitre · CVSS v3.1 · 12 references · NVD status: Modified

Description

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
July 4, 2022	Reserved	Reserved by mitre
July 4, 2022	Published	Published (CNA: mitre)
October 14, 2026	ENRICHED	ENRICHED — CVE-2022-34918. Received CVSS 7.8 and CPE data from NVD.
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2022-34918. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-843

References (12)

http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html [Third Party Advisory, VDB Entry]
http://packetstormsecurity.com/files/168543/Netfilter-nft_set_elem_init-Heap-Overflow-Privilege-Escalation.html [Exploit, Third Party Advisory, VDB Entry]
http://www.openwall.com/lists/oss-security/2022/07/05/1 [Exploit, Mailing List, Third Party Advisory]
http://www.openwall.com/lists/oss-security/2022/08/06/5 [Mailing List, Third Party Advisory]
https://cert-portal.siemens.com/productcert/html/ssa-794697.html
https://cert-portal.siemens.com/productcert/html/ssa-806742.html
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e6bc1f6cabcd30aba0b11219d8e01b952eacbb6 [Mailing List, Patch, Vendor Advisory]
https://lore.kernel.org/netfilter-devel/cd9428b6-7ffb-dd22-d949-d86f4869f452%40randorisec.fr/T/#u
https://security.netapp.com/advisory/ntap-20220826-0004/ [Third Party Advisory]
https://www.debian.org/security/2022/dsa-5191 [Third Party Advisory]
https://www.openwall.com/lists/oss-security/2022/07/02/3 [Exploit, Mailing List, Third Party Advisory]
https://www.randorisec.fr/crack-linux-firewall/ [Exploit, Third Party Advisory]

Authoritative record: CVE-2022-34918 at cve.org

Weaknesses: CWE-843

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-34918 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.