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Arbitrary Command Injection Affecting kernel-debuginfo package, versions <0:4.14.231-173.360.amzn2

Severity

 Recommended
0.0
high
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-1698181
  • published 27 Sep 2021
  • disclosed 8 Apr 2021
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Introduced: 8 Apr 2021

CVE-2021-29154 Open this link in a new tab
CWE-77 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.231-173.360.amzn2 or higher.
This issue was patched in ALAS2-2021-1627.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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.

References

CVSS Scores

version 3.1
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NVD

7.8 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

7 high
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SUSE

7 high