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.
How to fix
- linux linux_kernel6.6.143, 6.12.93, 6.15, 6.18.35, 7.0.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.6.91 ≤ v < 6.6.143, 6.12.29 ≤ v < 6.12.93, 6.14.7 ≤ v < 6.15, 6.15.1 ≤ v < 6.18.35, 6.19 ≤ v < 7.0.12, 6.15, 7.1 | 6.6.143, 6.12.93, 6.15, 6.18.35, 7.0.12 |
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