CVE-2025-37887 pds_core: handle unsupported PDS_CORE_CMD_FW_CONTROL result
A local attacker can cause a kernel crash or print garbage by triggering an uninitialized memory access in the pds_core driver via devlink commands.
- 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-2025-37887?
CVE-2025-37887 is a high-severity vulnerability in Linux kernel, published on 9 May 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:
pds_core: handle unsupported PDS_CORE_CMD_FW_CONTROL result
If the FW doesn't support the PDS_CORE_CMD_FW_CONTROL command the driver might at the least print garbage and at the worst crash when the user runs the "devlink dev info" devlink command.
This happens because the stack variable fw_list is not 0 initialized which results in fw_list.num_fw_slots being a garbage value from the stack. Then the driver tries to access fw_list.fw_names[i] with i >= ARRAY_SIZE and runs off the end of the array.
Fix this by initializing the fw_list and by not failing completely if the devcmd fails because other useful information is printed via devlink dev info even if the devcmd fails.
Weakness: CWE-908
Which versions are affected by CVE-2025-37887?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-37887?
Apply the vendor's patch.
Is CVE-2025-37887 being exploited?
There is no known exploitation of CVE-2025-37887 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-37887, DEBIAN-CVE-2025-37887, GHSA-mcq3-239h-fc92, ROOT-OS-UBUNTU-2404-CVE-2025-37887, UBUNTU-CVE-2025-37887.