SB20260816257 - Out-of-bounds read in Linux kernel usb peak_usb driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-74457)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in pcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error() when processing a crafted USB device payload. A local attacker can supply channel index values outside the bounds of usb_if->dev[] to cause a denial of service.

The channel control index is derived from device-supplied fields and values 2 through 15 exceed the two-entry usb_if->dev[] array, which can lead to a kernel panic in IRQ context.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0149fdb50a30944827acf9600a2cc44de0325a7f
• https://git.kernel.org/stable/c/1acab790b7cecd4e144d1d18bdfe549e282f6b0b
• https://git.kernel.org/stable/c/39132f166ca8ce00ae60d8a9068e06a60943cc4b
• https://git.kernel.org/stable/c/825c903ca3c98cd0cf0e3de8ab8f2604a5339b3f
• https://git.kernel.org/stable/c/f97b7e5e1cdaae15cd95b3a360028c7929664969