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Red Hat: CVE-2023-4244: kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction (Multiple Advisories)

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Red Hat: CVE-2023-4244: kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:H/Au:S/C:C/I:C/A:C)
Published
09/06/2023
Created
03/01/2024
Added
02/29/2024
Modified
12/05/2024

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.

Solution(s)

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

References

  • CVE-2023-4244
  • RHSA-2024:1018
  • RHSA-2024:1019
  • RHSA-2024:1248
  • RHSA-2024:2950
  • RHSA-2024:3138
  • RHSA-2024:3414
  • RHSA-2024:3421
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