CVE-2026-63943
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
39/100
Published: 2026-07-19
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
None
A:
High
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.
Weakness Classification (1)
Affected Software (9)
| Vendor | Product | Version |
|---|---|---|
| linux | linux_kernel | 6.6.91 – 6.6.143 |
| linux | linux_kernel | 6.15 |
| linux | linux_kernel | 6.15 |
| linux | linux_kernel | 6.15 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
References & Advisories (5)
Patch
Patch
Patch
Patch
Patch