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Linux KernelOperating system · Linux

CVE-2026-64276

HIGH · 7.8 CVSS v3.1 Developing Published 2026-07-25
Fix available
A fix is available. Upgrade to 5.10.261 / 5.15.212 or later.
See remediation →
80/100
Remediation priority · High
Zero-click 4 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · low confidence
Developing — this CVE was published recently and its authoritative NVD entry is still being established, so we're holding a technical summary until the source data settles rather than publish something unreliable. Re-checking after 2026-08-08.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 4.14.1, < 5.10.261>= 5.11, < 5.15.212>= 5.16, < 6.1.178>= 6.2, < 6.6.145>= 6.7, < 6.12.96>= 6.13, < 6.18.39>= 6.19, < 7.1.4= 4.14

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.10.261 / 5.15.212 / 6.1.178 or later
Fixed in 5.10.2615.15.2126.1.178
Recommended fix Moderate confidence
  1. 1. Locate the rmi_f30_map_gpios() function in the Linux kernel source (drivers/input/rmi4/rmi_f30.c)
  2. 2. Modify the gpioled_key_map allocation to use gpioled_count instead of min(gpioled_count, TRACKSTICK_RANGE_END)
  3. 3. Ensure the allocation uses kcalloc(gpioled_count, sizeof(u16), GFP_KERNEL) to safely allocate for the full count
  4. 4. The mapping loop in rmi_f30_attention() should continue to assign only min(gpioled_count, TRACKSTICK_RANGE_END) entries to stay within the valid range
  5. 5. Verify that input->keycodemax and input->keycode are properly sized to match gpioled_count

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

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