CVE-2026-64276
In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count rmi_f30_map_gpios() allocates gpioled_key_map with min(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count rmi_f30_map_gpios() allocates gpioled_key_map with min(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f30_attention() iterates the full f30->gpioled_count (device query register, range 0..31) and dereferences gpioled_key_map[i], and input->keycodemax is set to the full gpioled_count while input->keycode points at the 6-entry allocation. A device that reports gpioled_count > 6 with GPIO support enabled therefore causes an out-of-bounds read on the attention interrupt and out-of-bounds read/write through the EVIOCGKEYCODE/EVIOCSKEYCODE ioctls, which bound the index only against keycodemax. This is the same defect as the F3A handler, which was copied from F30. Size the keymap for the full gpioled_count; the mapping loop still assigns only the first min(gpioled_count, TRACKSTICK_RANGE_END) entries.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.17% probability · 6th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/26c895928d7118436a24f564587cb4aefc40cdd8Patch
- https://git.kernel.org/stable/c/4e3689c26854356f41fbaa1eafa382e58ac79e00Patch
- https://git.kernel.org/stable/c/8c6d18d61bb6fe0e6edf848413391c590552e8a9Patch
- https://git.kernel.org/stable/c/bfe622efecd4ff0a792d0ecd1a8dce535a902f50Patch
- https://git.kernel.org/stable/c/d162a1ead7de404d8b41a093c83ed0db6487cdedPatch
- https://git.kernel.org/stable/c/d577e46785d45484b2ab7e7309c49b18764bf56cPatch
- https://git.kernel.org/stable/c/e849c6f51e6877104c765da084e001ec37c8e119Patch
- https://git.kernel.org/stable/c/f0be9eba946e9200b43265e0a748d38bd0a56954Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.