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Red Hat: CVE-2023-4128: kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (Multiple Advisories)

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Red Hat: CVE-2023-4128: kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
08/10/2023
Created
10/11/2023
Added
10/11/2023
Modified
05/28/2024

Description

A use-after-free flaws was found in net/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel. This flaw allows a local attacker to perform a local privilege escalation due to incorrect handling of the existing filter, leading to a kernel information leak issue. There are 3 CVEs for these flaws: CVE-2023-4206, CVE-2023-4207, CVE-2023-4208. The older one CVE-2023-4128 similar to these 3 (CVE-2023-4206, CVE-2023-4207, CVE-2023-4208) and the CVE-2023-4128 rejected as duplicate.

Solution(s)

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

References

  • CVE-2023-4128
  • RHSA-2023:5548
  • RHSA-2023:5575
  • RHSA-2023:5603
  • RHSA-2023:5604
  • RHSA-2023:5627
  • RHSA-2023:6901
  • RHSA-2023:7077
  • RHSA-2023:7370
  • RHSA-2023:7379
  • RHSA-2023:7418
  • RHSA-2023:7419
  • RHSA-2023:7423
  • RHSA-2023:7424
  • RHSA-2023:7539
  • RHSA-2023:7558
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