Detections
Analytics
CVE-2025-68799
high
Description
In the Linux kernel, the following vulnerability has been resolved: caif: fix integer underflow in cffrml_receive() The cffrml_receive() function extracts a length field from the packet header and, when FCS is disabled, subtracts 2 from this length without validating that len >= 2. If an attacker sends a malicious packet with a length field of 0 or 1 to an interface with FCS disabled, the subtraction causes an integer underflow. This can lead to memory exhaustion and kernel instability, potential information disclosure if padding contains uninitialized kernel memory. Fix this by validating that len >= 2 before performing the subtraction.
References
https://git.kernel.org/stable/c/f818cd472565f8b0c2c409b040e0121c5cf8592c
https://git.kernel.org/stable/c/f407f1c9f45bbf5c99fd80b3f3f4a94fdbe35691
https://git.kernel.org/stable/c/c54091eec6fed19e94182aa05dd6846600a642f7
https://git.kernel.org/stable/c/8a11ff0948b5ad09b71896b7ccc850625f9878d1
https://git.kernel.org/stable/c/785c7be6361630070790f6235b696da156ac71b3
https://git.kernel.org/stable/c/4ec29714aa4e0601ea29d2f02b461fc0ac92c2c3
https://git.kernel.org/stable/c/21fdcc00656a60af3c7aae2dea8dd96abd35519c