Bug 2451207 (CVE-2026-23295)

Summary: CVE-2026-23295 kernel: accel/amdxdna: Fix dead lock for suspend and resume
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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OS: Linux   
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A flaw was found in the Linux kernel's accel/amdxdna driver. A local application can trigger a deadlock by issuing a query IOCTL (Input/Output Control) while the system's auto suspend feature is active. This can lead to a Denial of Service (DoS), making the system unresponsive.
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Description OSIDB Bzimport 2026-03-25 11:04:40 UTC 
In the Linux kernel, the following vulnerability has been resolved:

accel/amdxdna: Fix dead lock for suspend and resume

When an application issues a query IOCTL while auto suspend is running,
a deadlock can occur. The query path holds dev_lock and then calls
pm_runtime_resume_and_get(), which waits for the ongoing suspend to
complete. Meanwhile, the suspend callback attempts to acquire dev_lock
and blocks, resulting in a deadlock.

Fix this by releasing dev_lock before calling pm_runtime_resume_and_get()
and reacquiring it after the call completes. Also acquire dev_lock in the
resume callback to keep the locking consistent.
Comment 1 Alexander B 2026-03-25 15:59:36 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032526-CVE-2026-23295-59d2@gregkh/T