Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fwctl: pds: Validate RPC input size before parsing The fwctl core allocates the device-specific RPC input buffer with fwctl_rpc.in_len and passes that buffer to the driver callback. pdsfc_fw_rpc() casts the buffer to struct fwctl_rpc_pds and then calls pdsfc_validate_rpc(), which reads fields from that structure before checking that the input buffer is large enough to contain it. A short in_len can make pds_fwctl read beyond the allocation. Reject pds RPC buffers that are smaller than struct fwctl_rpc_pds before parsing any pds-specific fields.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.15, < 6.18.34 |
References
- https://git.kernel.org/stable/c/0d470d36551058e3f728574308b815a80bca710fPatch
- https://git.kernel.org/stable/c/9e3f18883a98420a3b8873c6f894bc57e9b98e41Patch
- https://git.kernel.org/stable/c/e7537735028c3ad4b0bfc02ff8fa2a1a28aa04fePatch
FAQ
What is CVE-2026-64101?
CVE-2026-64101 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: fwctl: pds: Validate RPC input size before parsing The fwctl core allocates the device-specific RPC input buffer with fwctl_rpc.in...
How severe is CVE-2026-64101?
CVE-2026-64101 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64101?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.