Description
In the Linux kernel, the following vulnerability has been resolved: HID: bpf: Fix hid_bpf_get_data() range check hid_bpf_get_data() returns a pointer into the HID-BPF context data when the caller-provided offset and size fit inside ctx->allocated_size. The current check adds rdwr_buf_size and offset before comparing the result against ctx->allocated_size. Since both values are unsigned, a very large size can wrap the sum below ctx->allocated_size and make the helper return a pointer even though the requested range is not contained in the backing buffer. Use check_add_overflow() to reject wrapped range ends before comparing the requested range end against ctx->allocated_size.
References5
- git.kernel.org/stable/c/2d044049421dd48212b28646a850749d4a2d57fa
- git.kernel.org/stable/c/61a959b82f1aecd6d2d35c208013dd077cac9d10
- git.kernel.org/stable/c/ca373549140dfb386aa2de38364b58441b1f4885
- git.kernel.org/stable/c/f72176bde0cc0e709e41ab170c71e8f229232af6
- git.kernel.org/stable/c/f81bc5a709dcbaf2a3bbef4ca7167f93900cc39f
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 7 · as of 11 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.