CVE-2026-74457

Summary

In the Linux kernel, the following vulnerability has been resolved:

can: peak_usb: add bounds check for USB channel index

The channel control index ctrl_idx is derived from rx->len which comes directly from a device USB payload. The mask 0x0f allows values 0-15, but the array size of usb_if->dev[] is only 2. Values 2-15 cause heap out-of-bounds read, eventually causing kernel panic in the IRQ context.

Add bounds checking for ctrl_idx before the array access in both pcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd8a199355f8f8a0797c00d98788d7282c9ea38bd < 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3faffected
LinuxLinuxd8a199355f8f8a0797c00d98788d7282c9ea38bd < f97b7e5e1cdaae15cd95b3a360028c7929664969affected
LinuxLinuxd8a199355f8f8a0797c00d98788d7282c9ea38bd < 1acab790b7cecd4e144d1d18bdfe549e282f6b0baffected
LinuxLinuxd8a199355f8f8a0797c00d98788d7282c9ea38bd < 0149fdb50a30944827acf9600a2cc44de0325a7faffected
LinuxLinuxd8a199355f8f8a0797c00d98788d7282c9ea38bd < 39132f166ca8ce00ae60d8a9068e06a60943cc4baffected
LinuxLinux3.4affected
LinuxLinux0 < 3.4unaffected
LinuxLinux6.6.151 <= 6.6.*unaffected
LinuxLinux6.12.103 <= 6.12.*unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2-rc6 <= *unaffected

Weaknesses

References