CVE-2025-40113 remoteproc: qcom: pas: Shutdown lite ADSP DTB on X1E
A missing shutdown sequence for the ADSP DTB firmware in the Linux kernel can cause a system crash when accessing specific memory regions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-40113?
CVE-2025-40113 is a denial of service vulnerability in Linux, published on 12 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
remoteproc: qcom: pas: Shutdown lite ADSP DTB on X1E
The ADSP firmware on X1E has separate firmware binaries for the main firmware and the DTB. The same applies for the "lite" firmware loaded by the boot firmware.
When preparing to load the new ADSP firmware we shutdown the lite_pas_id for the main firmware, but we don't shutdown the corresponding lite pas_id for the DTB. The fact that we're leaving it "running" forever becomes obvious if you try to reuse (or just access) the memory region used by the "lite" firmware: The &adsp_boot_mem is accessible, but accessing the &adsp_boot_dtb_mem results in a crash.
We don't support reusing the memory regions currently, but nevertheless we should not keep part of the lite firmware running. Fix this by adding the lite_dtb_pas_id and shutting it down as well.
We don't have a way to detect if the lite firmware is actually running yet, so ignore the return status of qcom_scm_pas_shutdown() for now. This was already the case before, the assignment to "ret" is not used anywhere.
Which versions are affected by CVE-2025-40113?
How do I fix CVE-2025-40113?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-40113 being exploited?
There is no known exploitation of CVE-2025-40113 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-40113, DEBIAN-CVE-2025-40113, GHSA-326w-gf89-vgpc, ROOT-OS-DEBIAN-13-CVE-2025-40113, UBUNTU-CVE-2025-40113.