CVE-2024-27038 Affecting kernel-default-devel package, versions <5.14.21-150500.55.62.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-SLES155-KERNELDEFAULTDEVEL-6859729
  • published16 May 2024
  • disclosed15 May 2024

Introduced: 15 May 2024

CVE-2024-27038  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-default-devel to version 5.14.21-150500.55.62.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-devel package and not the kernel-default-devel package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

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

clk: Fix clk_core_get NULL dereference

It is possible for clk_core_get to dereference a NULL in the following sequence:

clk_core_get() of_clk_get_hw_from_clkspec() __of_clk_get_hw_from_provider() __clk_get_hw()

__clk_get_hw() can return NULL which is dereferenced by clk_core_get() at hw->core.

Prior to commit dde4eff47c82 ("clk: Look for parents with clkdev based clk_lookups") the check IS_ERR_OR_NULL() was performed which would have caught the NULL.

Reading the description of this function it talks about returning NULL but that cannot be so at the moment.

Update the function to check for hw before dereferencing it and return NULL if hw is NULL.

CVSS Scores

version 3.1