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Red Hat: CVE-2022-34918: CVE-2022-34918 kernel: heap overflow in nft_set_elem_init() (Multiple Advisories)

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Red Hat: CVE-2022-34918: CVE-2022-34918 kernel: heap overflow in nft_set_elem_init() (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
07/04/2022
Created
10/20/2022
Added
10/20/2022
Modified
03/13/2024

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • DSA-5191
  • CVE-2022-34918
  • RHSA-2022:6582
  • RHSA-2022:6592
  • RHSA-2022:6610

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