Input: cros_ec_keyb - fix an invalid memory access (Linux Linux)

CVE-2025-40263
Not available

At a glance

Source
NVD
EPSS
EPSS 0.19 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

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.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 < d74864291cb8bd784d44d1d02e87109cf88666bb ; affected ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 < 9cf59f4724a9ee06ebb06c76b8678ac322e850b7 ; affected ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 < 6d81068685154535af06163eb585d6d9663ec7ec ; affected ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 < 2d251c15c27e2dd16d6318425d2f7260cbd47d39 ; affected ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 < e08969c4d65ac31297fcb4d31d4808c789152f68
Linux · Linuxaffected 5.19 ; unaffected 0 < 5.19 ; unaffected 6.1.159 ≤ 6.1.* ; unaffected 6.6.118 ≤ 6.6.* ; unaffected 6.12.60 ≤ 6.12.* ; unaffected 6.17.10 ≤ 6.17.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD