GHSA-r3v3-c3jq-3938 · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: Input: cros_ec_keyb - fix an...
In the Linux kernel, the following vulnerability has been resolved: Input: cros_ec_keyb - fix an invalid memory access If cros_ec_keyb_register_matrix() isn't called (due to `buttons_switches_only`) in cros_ec_keyb_probe(), `ckdev->idev` remains NULL. An invalid memory access is observed in cros_ec_keyb_process() when receiving an EC_MKBP_EVENT_KEY_MATRIX event in cros_ec_keyb_work() in such case. Unable to handle kernel read from unreadable memory at virtual address 0000000000000028 ... x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: input_event cros_ec_keyb_work blocking_notifier_call_chain ec_irq_thread It's still unknown about why the kernel receives such malformed event, in any cases, the kernel shouldn't access `ckdev->idev` and friends if the driver doesn't intend to initialize them.
Conclusion & alert: CVE-2025-40263 is rated Low Risk (5.8/100): low exploitation likelihood (EPSS 0.02%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-02 | 0.05% | 0.02% | -0.03% |
| 2 | 2026-04-05 | 0.02% | 0.05% | +0.03% |
| 3 | 2025-12-05 | — | 0.02% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
No CVSS data in dataset for this CVE.
GHSA-r3v3-c3jq-3938 · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: Input: cros_ec_keyb - fix an...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-40263 not yet assigned priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. | https://security-tracker.debian.org/tracker/CVE-2025-40263 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2025-40263 |
suse
|
medium | CVE-2025-40263 severity moderate: SUSE including 468 source package names (13.2-9.1:libsystemd0-254.23-1.1, 13.2-9.1:libudev1-254.23-1.1, …), 976 product×package rows across 175 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (175 product lines)): Fixed 643, Known Affected 231, Known Not Affected 77, First Fixed 25. | https://www.suse.com/security/cve/CVE-2025-40263/ |
ubuntu
|
medium | CVE-2025-40263 medium priority: Ubuntu including 157 source packages (linux, linux-allwinner-5.19, …), 1405 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1010, ignored 182, released 160, needed 50, pending 3. | https://ubuntu.com/security/CVE-2025-40263 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||