CVE-2025-68217
Published Dec 16, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: Input: pegasus-notetaker - fix potential out-of-bounds access In the pegasus_notetaker driver, the pegasus_probe() function allocates the URB transfer buffer using the wMaxPacketSize value from the endpoint descriptor. An attacker can use a malicious USB descriptor to force the allocation of a very small buffer. Subsequently, if the device sends an interrupt packet with a specific pattern (e.g., where the first byte is 0x80 or 0x42), the pegasus_parse_packet() function parses the packet without checking the allocated buffer size. This leads to an out-of-bounds memory access.
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References
Other References
https://git.kernel.org/stable/c/015b719962696b793997e8deefac019f816aca77
https://git.kernel.org/stable/c/084264e10e2ae8938a54355123ad977eb9df56d6
https://git.kernel.org/stable/c/36bc92b838ff72f62f2c17751a9013b29ead2513
https://git.kernel.org/stable/c/69aeb507312306f73495598a055293fa749d454e
https://git.kernel.org/stable/c/763c3f4d2394a697d14af1335d3bb42f05c9409f
https://git.kernel.org/stable/c/9ab67eff6d654e34ba6da07c64761aa87c2a3c26
https://git.kernel.org/stable/c/c4e746651bd74c38f581e1cf31651119a94de8cd
https://git.kernel.org/stable/c/d344ea1baf1946c90f0cd6f9daeb5f3e0a0ca479
Frequently Asked Questions
What is CVE-2025-68217? +
In the Linux kernel, the following vulnerability has been resolved:
Input: pegasus-notetaker - fix potential out-of-bounds access
In the pegasus_notetaker driver, the pegasus_probe() function allocates
the URB transfer buffer using the wMaxPacketSize value from
the endpoint descriptor. An attacker can use a malicious USB descriptor
to force the allocation of a very small buffer.
Subsequently, if the device sends an interrupt packet with a specific
pattern (e.g., where the first byte is 0x80 or 0x42),
the pegasus_parse_packet() function parses the packet without checking
the allocated buffer size. This leads to an out-of-bounds memory access.
How do I check if I'm vulnerable to CVE-2025-68217? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.