VYPR
Unrated severityNVD Advisory· Published Jul 19, 2026· Updated Jul 27, 2026

CVE-2026-63943

CVE-2026-63943

Description

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

Input: xpad - fix out-of-bounds access for Share button

xpadone_process_packet() receives len directly from urb->actual_length and uses it to index the share-button byte at data[len - 18] or data[len - 26]. Since both len and data[0] are under the device's control, a broken controller can send a GIP_CMD_INPUT packet with actual_length < 18 (e.g. 5 bytes) and reach this code path, causing accesses beyond the actual array.

Fix this by calculating the offset and checking bounds against the packet length.

Affected products

15

Patches

Vulnerability mechanics

References

5

News mentions

0

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