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CVE-2025-40263

Input: cros_ec_keyb - fix an invalid memory access

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.
Daten sind bereitgestellt durch das CVE Programm von Authorized Data Publishers (ADP) (Unstrukturiert)
HerstellerSiemens
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Produkt RUGGEDCOM RST2428P
Default Statusunknown
Version 0
Version < V4.0
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.063
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/2d251c15c27e2dd16d6318425d2f7260cbd47d39
https://git.kernel.org/stable/c/6d81068685154535af06163eb585d6d9663ec7ec
https://git.kernel.org/stable/c/9cf59f4724a9ee06ebb06c76b8678ac322e850b7
https://git.kernel.org/stable/c/e08969c4d65ac31297fcb4d31d4808c789152f68
https://git.kernel.org/stable/c/d74864291cb8bd784d44d1d02e87109cf88666bb
https://cert-portal.siemens.com/productcert/html/ssa-253495.html