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Incorrect Authorization The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers  (opens in a new tab)

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EPSS
0.66% (47th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELCROSSHEADERS-4394186
  • published26 Jul 2021
  • disclosed18 May 2021
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Introduced: 18 May 2021

CVE-2021-22543  (opens in a new tab)
CWE-863  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.

An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.

References