Use After Free Affecting kernel-zfcpdump package, versions <0:5.14.0-70.30.1.el9_0


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-ALMALINUX9-KERNELZFCPDUMP-5640611
  • published 28 May 2023
  • disclosed 2 Nov 2022

How to fix?

Upgrade AlmaLinux:9 kernel-zfcpdump to version 0:5.14.0-70.30.1.el9_0 or higher.
This issue was patched in ALSA-2022:7318.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-zfcpdump package and not the kernel-zfcpdump package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

It was discovered that when exec'ing from a non-leader thread, armed POSIX CPU timers would be left on a list but freed, leading to a use-after-free.

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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SUSE

8.4 high
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Red Hat

7.8 high