CVE-2024-57985 firmware: qcom: scm: Cleanup global '__scm' on probe failures
A null pointer dereference in the Qualcomm SCM driver can cause a kernel crash if probe failures are not properly handled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-57985?
CVE-2024-57985 is a high-severity vulnerability in Linux kernel, published on 27 Feb 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:
firmware: qcom: scm: Cleanup global '__scm' on probe failures
If SCM driver fails the probe, it should not leave global '__scm' variable assigned, because external users of this driver will assume the probe finished successfully. For example TZMEM parts ('__scm->mempool') are initialized later in the probe, but users of it (__scm_smc_call()) rely on the '__scm' variable.
This fixes theoretical NULL pointer exception, triggered via introducing probe deferral in SCM driver with call trace:
qcom_tzmem_alloc+0x70/0x1ac (P) qcom_tzmem_alloc+0x64/0x1ac (L) qcom_scm_assign_mem+0x78/0x194 qcom_rmtfs_mem_probe+0x2d4/0x38c platform_probe+0x68/0xc8
Which versions are affected by CVE-2024-57985?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-57985?
Apply the vendor's patch.
Is CVE-2024-57985 being exploited?
There is no known exploitation of CVE-2024-57985 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-57985, DEBIAN-CVE-2024-57985, GHSA-6grj-9h9x-cv46, UBUNTU-CVE-2024-57985.