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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-headers  (opens in a new tab)

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EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELHEADERS-4143269
  • published26 Jul 2021
  • disclosed22 Mar 2021
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Introduced: 22 Mar 2021

CVE-2021-28971  (opens in a new tab)
CWE-476  (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-headers package and not the kernel-headers package as distributed by RHEL.

In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6.

References