Race Condition Affecting kernel-uek-modules-extra package, versions <0:5.15.0-302.167.6.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEKMODULESEXTRA-8373860
  • published14 Nov 2024
  • disclosed9 Oct 2024

Introduced: 9 Oct 2024

CVE-2024-47668  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek-modules-extra to version 0:5.15.0-302.167.6.el8uek or higher.
This issue was patched in ELSA-2024-12815.

NVD Description

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

In the Linux kernel, the following vulnerability has been resolved:

lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()

If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later.

If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path.

CVSS Scores

version 3.1