Bug 2536532 (CVE-2026-93143)

Summary: CVE-2026-93143 kernel: staging: media: ipu7: fix pm_runtime refcount leak in ipu7_resume()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the ipu7 driver within the Linux kernel. When the ipu7_resume() function is called, if the runtime power management (PM) resume operation fails, a reference count is incremented but not properly decremented. This resource leak could lead to system instability or a Denial of Service (DoS) due to resource exhaustion.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-09-17 18:19:11 UTC 
In the Linux kernel, the following vulnerability has been resolved:

staging: media: ipu7: fix pm_runtime refcount leak in ipu7_resume()

ipu7_resume() calls pm_runtime_get_sync() before resuming the device.
If the runtime PM resume fails, the usage count remains incremented, but
the error path returns without dropping the reference.

Use pm_runtime_resume_and_get() instead, which balances the usage count
on failure and avoids the leak. Keep returning 0 on error, as resume
callbacks should not propagate failures to the PM core, matching the
behaviour of the ipu6 driver.
Comment 1 gkamathe 2026-09-18 19:41:18 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93143.mbox