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Improper Locking Affecting kernel-obs-build package, versions <6.4.0-150600.23.50.1

Severity

 Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-SLES156-KERNELOBSBUILD-10227679
  • published22 May 2025
  • disclosed21 May 2025
Report a new vulnerability Found a mistake?

Introduced: 21 May 2025

NewCVE-2025-22014  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 kernel-obs-build to version 6.4.0-150600.23.50.1 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:15.6 relevant fixed versions and status.

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

soc: qcom: pdr: Fix the potential deadlock

When some client process A call pdr_add_lookup() to add the look up for the service and does schedule locator work, later a process B got a new server packet indicating locator is up and call pdr_locator_new_server() which eventually sets pdr->locator_init_complete to true which process A sees and takes list lock and queries domain list but it will timeout due to deadlock as the response will queued to the same qmi->wq and it is ordered workqueue and process B is not able to complete new server request work due to deadlock on list lock.

Fix it by removing the unnecessary list iteration as the list iteration is already being done inside locator work, so avoid it here and just call schedule_work() here.

   Process A                        Process B


                             process_scheduled_works()

pdr_add_lookup() qmi_data_ready_work() process_scheduled_works() pdr_locator_new_server() pdr->locator_init_complete=true; pdr_locator_work() mutex_lock(&pdr->list_lock);

 pdr_locate_service()                  mutex_lock(&amp;pdr-&gt;list_lock);


  pdr_get_domain_list()
   pr_err(&#34;PDR: %s get domain list
           txn wait failed: %d\n&#34;,
           req-&gt;service_name,
           ret);

Timeout error log due to deadlock:

" PDR: tms/servreg get domain list txn wait failed: -110 PDR: service lookup for msm/adsp/sensor_pd:tms/servreg failed: -110 "

Thanks to Bjorn and Johan for letting me know that this commit also fixes an audio regression when using the in-kernel pd-mapper as that makes it easier to hit this race. [1]

CVSS Base Scores

version 3.1