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Red Hat: CVE-2020-36694: use-after-free in the packet processing context (Multiple Advisories)

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Red Hat: CVE-2020-36694: use-after-free in the packet processing context (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:M/C:C/I:C/A:C)
Published
05/21/2023
Created
08/30/2023
Added
08/30/2023
Modified
01/28/2025

Description

An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.

Solution(s)

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

References

  • CVE-2020-36694
  • RHSA-2021:1578
  • RHSA-2021:1739
  • 查看数 704
  • 已创建
  • 最后回复

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