Out-of-bounds Read Affecting kernel-rt-trace-devel package, versions <0:3.10.0-957.10.1.rt56.921.el7


Severity

high

    Threat Intelligence

    EPSS
    0.06% (29th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2132349
  • published 26 Jul 2021
  • disclosed 5 Oct 2018

How to fix?

Upgrade Centos:7 kernel-rt-trace-devel to version 0:3.10.0-957.10.1.rt56.921.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace-devel package and not the kernel-rt-trace-devel package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

CVSS Scores

version 3.1
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Snyk

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

7.8 high
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SUSE

3.3 low
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Red Hat

4.7 medium