Race Condition Affecting kernel-uek-core package, versions <0:5.15.0-0.30.19.el8uek


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-ORACLE8-KERNELUEKCORE-2939591
  • published 2 Jul 2022
  • disclosed 22 Apr 2022

How to fix?

Upgrade Oracle:8 kernel-uek-core to version 0:5.15.0-0.30.19.el8uek or higher.
This issue was patched in ELSA-2022-9533.

NVD Description

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

In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race condition perhaps can only be exploited infrequently.

CVSS Scores

version 3.1
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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
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SUSE

7.4 high
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Red Hat

7 high