CVE-2025-68799
caif: fix integer underflow in cffrml_receive()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.35
References 7
git.kernel.org
- stable/c/f407f1c9f45bbf5c99fd80b3f3f4a94fdbe35691
- stable/c/c54091eec6fed19e94182aa05dd6846600a642f7
- stable/c/785c7be6361630070790f6235b696da156ac71b3
- stable/c/f818cd472565f8b0c2c409b040e0121c5cf8592c
- stable/c/4ec29714aa4e0601ea29d2f02b461fc0ac92c2c3
- stable/c/21fdcc00656a60af3c7aae2dea8dd96abd35519c
- stable/c/8a11ff0948b5ad09b71896b7ccc850625f9878d1