Use After Free Affecting kernel-tools-libs-devel package, versions <0:4.18.0-372.46.1.el8_6


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.1% (43rd percentile)

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  • Snyk ID SNYK-RHEL8-KERNELTOOLSLIBSDEVEL-4348026
  • published 31 Oct 2022
  • disclosed 7 Jul 2021

How to fix?

Upgrade RHEL:8 kernel-tools-libs-devel to version 0:4.18.0-372.46.1.el8_6 or higher.
This issue was patched in RHSA-2023:1130.

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.

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

CVSS Scores

version 3.1
Expand this section

NVD

7 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • 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 high
Expand this section

SUSE

7 high