CVE-2022-50239 Affecting kernel-obs-build package, versions <5.14.21-150500.55.124.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-SLES155-KERNELOBSBUILD-13607297
  • published17 Oct 2025
  • disclosed16 Oct 2025

Introduced: 16 Oct 2025

NewCVE-2022-50239  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-obs-build to version 5.14.21-150500.55.124.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-obs-build package and not the kernel-obs-build 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:

cpufreq: qcom: fix writes in read-only memory region

This commit fixes a kernel oops because of a write in some read-only memory:

[    9.068287] Unable to handle kernel write to read-only memory at virtual address ffff800009240ad8
..snip..
[    9.138790] Internal error: Oops: 9600004f [#1] PREEMPT SMP
..snip..
[    9.269161] Call trace:
[    9.276271]  __memcpy+0x5c/0x230
[    9.278531]  snprintf+0x58/0x80
[    9.282002]  qcom_cpufreq_msm8939_name_version+0xb4/0x190
[    9.284869]  qcom_cpufreq_probe+0xc8/0x39c
..snip..

The following line defines a pointer that point to a char buffer stored in read-only memory:

char *pvs_name = &#34;speedXX-pvsXX-vXX&#34;;

This pointer is meant to hold a template "speedXX-pvsXX-vXX" where the XX values get overridden by the qcom_cpufreq_krait_name_version function. Since the template is actually stored in read-only memory, when the function executes the following call we get an oops:

snprintf(*pvs_name, sizeof(&#34;speedXX-pvsXX-vXX&#34;), &#34;speed%d-pvs%d-v%d&#34;,
     speed, pvs, pvs_ver);

To fix this issue, we instead store the template name onto the stack by using the following syntax:

char pvs_name_buffer[] = &#34;speedXX-pvsXX-vXX&#34;;

Because the pvs_name needs to be able to be assigned to NULL, the template buffer is stored in the pvs_name_buffer and not under the pvs_name variable.

CVSS Base Scores

version 3.1