CVE-2026-64276: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 26c895928d7118436a24f564587cb4aefc40cdd8, 4e3689c26854356f41fbaa1eafa382e58ac79e00, 8c6d18d61bb6fe0e6edf848413391c590552e8a9; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1.
Low priority for now. Upgrade to Linux Linux 26c895928d7118436a24f564587cb4aefc40cdd8, 4e3689c26854356f41fbaa1eafa382e58ac79e00, 8c6d18d61bb6fe0e6edf848413391c590552e8a9; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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.
- Published
- Jul 25, 2026
- Updated
- Oct 24, 2026
- EPSS
- 0.1% · 6th percentile
- CWE
- CWE-787
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.8
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel4.14.1 and later · before 5.10.261
- linux linux kernel5.11 and later · before 5.15.212
- linux linux kernel5.16 and later · before 6.1.178
- linux linux kernel6.2 and later · before 6.6.145
- linux linux kernel6.7 and later · before 6.12.96
- linux linux kernel6.13 and later · before 6.18.39
- linux linux kernel6.19 and later · before 7.1.4
- linux linux kernel4.14
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 4.14affected
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before 8c6d18d61bb6fe0e6edf848413391c590552e8a9affected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before d162a1ead7de404d8b41a093c83ed0db6487cdedaffected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before f0be9eba946e9200b43265e0a748d38bd0a56954affected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before 26c895928d7118436a24f564587cb4aefc40cdd8affected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before 4e3689c26854356f41fbaa1eafa382e58ac79e00affected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before e849c6f51e6877104c765da084e001ec37c8e119affected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before bfe622efecd4ff0a792d0ecd1a8dce535a902f50affected · git
- 3e64fcbdbd10e46dede502d507dbcc104837cd59 and later · before d577e46785d45484b2ab7e7309c49b18764bf56caffected · git
- before 4.14not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | bpftool | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-abi-stablelists | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-core | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-cross-headers | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-debug | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-debug-core | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-debug-devel | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-debug-modules-extra | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-devel | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-doc | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-headers | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-modules | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-modules-extra | before 4.18.0-553.158.1.el8_10 | 4.18.0-553.158.1.el8_10 |
| AlmaLinux:8 | kernel-rt | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-core | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-debug | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-core | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-devel | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-devel | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
| AlmaLinux:8 | kernel-rt-modules | before 4.18.0-553.158.1.rt7.499.el8_10 | 4.18.0-553.158.1.rt7.499.el8_10 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2026-64274Jul 25, 2026 · Input: goodix - clamp the device-reported contact count31Monitor
- ← EarlierCVE-2026-64275Jul 25, 2026 · Input: elan_i2c - prevent division by zero and arithmetic underflow22Monitor
- Later →CVE-2026-64277Jul 25, 2026 · Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 26c895928d7118436a24f564587cb4aefc40cdd8 | Vendor (CNA) |
| Linux Linux | 4e3689c26854356f41fbaa1eafa382e58ac79e00 | Vendor (CNA) |
| Linux Linux | 8c6d18d61bb6fe0e6edf848413391c590552e8a9 | Vendor (CNA) |
| Linux Linux | bfe622efecd4ff0a792d0ecd1a8dce535a902f50 | Vendor (CNA) |
| Linux Linux | d162a1ead7de404d8b41a093c83ed0db6487cded | Vendor (CNA) |
| Linux Linux | d577e46785d45484b2ab7e7309c49b18764bf56c | Vendor (CNA) |
| Linux Linux | e849c6f51e6877104c765da084e001ec37c8e119 | Vendor (CNA) |
| Linux Linux | f0be9eba946e9200b43265e0a748d38bd0a56954 | Vendor (CNA) |
| azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 | 6.6.145.2-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| almalinux:kernel | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-core | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel-matched | 5.14.0-687.42.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.180-1 · Debian:12 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.100-1~deb12u1 · Debian:12 | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debuginfo | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel-matched | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:5.14.0-687.42.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
+7
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/4e3689c26854356f41fbaa1eafa382e58ac79e00
- git.kernel.org/stable/c/8c6d18d61bb6fe0e6edf848413391c590552e8a9
- git.kernel.org/stable/c/bfe622efecd4ff0a792d0ecd1a8dce535a902f50
- git.kernel.org/stable/c/d162a1ead7de404d8b41a093c83ed0db6487cded
- git.kernel.org/stable/c/d577e46785d45484b2ab7e7309c49b18764bf56c
- git.kernel.org/stable/c/e849c6f51e6877104c765da084e001ec37c8e119
- git.kernel.org/stable/c/f0be9eba946e9200b43265e0a748d38bd0a56954
Vendor advisories and official records. Exploit/PoC links are deliberately left out.