Arbitrary Command Injection Affecting kernel-rt-kvm package, versions <0:4.18.0-372.9.1.rt7.166.el8


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTKVM-3195620
  • published5 Jan 2023
  • disclosed8 Apr 2021

Introduced: 8 Apr 2021

CVE-2021-29154  (opens in a new tab)
CWE-77  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-kvm to version 0:4.18.0-372.9.1.rt7.166.el8 or higher.
This issue was patched in RLSA-2022:1975.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-kvm package and not the kernel-rt-kvm package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c.

CVSS Scores

version 3.1