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Out-of-bounds Write Affecting kernel-tools-libs-devel package, versions <0:4.18.0-193.64.1.el8_2

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.21% (60th percentile)

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  • Snyk ID SNYK-RHEL8-KERNELTOOLSLIBSDEVEL-3963366
  • published 26 Jul 2021
  • disclosed 7 Jul 2021
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Introduced: 7 Jul 2021

CVE-2021-22555 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade RHEL:8 kernel-tools-libs-devel to version 0:4.18.0-193.64.1.el8_2 or higher.
This issue was patched in RHSA-2021:3363.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs-devel package and not the kernel-tools-libs-devel package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

References

CVSS Scores

version 3.1
Expand this section

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
Expand this section

Red Hat

7.8 high
Expand this section

SUSE

7.8 high