CVE-2025-68217

Linux Kernel - Out-of-Bounds Memory Access in pegasus_notetaker Driver via Malicious USB Descriptor

Title source: llm
STIX 2.1

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.

Scores

EPSS 0.0004
EPSS Percentile 11.4%

Details

Status published
Products (25)
linux/Kernel 4.8.0 - 5.4.302linux
linux/Kernel 5.11.0 - 5.15.197linux
linux/Kernel 5.16.0 - 6.1.159linux
linux/Kernel 5.5.0 - 5.10.247linux
linux/Kernel 6.13.0 - 6.17.10linux
linux/Kernel 6.2.0 - 6.6.118linux
linux/Kernel 6.7.0 - 6.12.60linux
Linux/Linux < 4.8
Linux/Linux 1afca2b66aac7ac262d3511c68725e9e7053b40f - 015b719962696b793997e8deefac019f816aca77
Linux/Linux 1afca2b66aac7ac262d3511c68725e9e7053b40f - 084264e10e2ae8938a54355123ad977eb9df56d6
... and 15 more
Published Dec 16, 2025
Tracked Since Feb 18, 2026