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Red Hat: CVE-2021-20239: CVE-2021-20239 kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (Multiple Advisories)

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Red Hat: CVE-2021-20239: CVE-2021-20239 kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
05/28/2021
Created
11/11/2021
Added
11/10/2021
Modified
03/13/2024

Description

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.

Solution(s)

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

References

  • CVE-2021-20239
  • RHSA-2021:4140
  • RHSA-2021:4356

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