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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 einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0
Version < d74864291cb8bd784d44d1d02e87109cf88666bb
Status affected
Version ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0
Version < 9cf59f4724a9ee06ebb06c76b8678ac322e850b7
Status affected
Version ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0
Version < 6d81068685154535af06163eb585d6d9663ec7ec
Status affected
Version ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0
Version < 2d251c15c27e2dd16d6318425d2f7260cbd47d39
Status affected
Version ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0
Version < e08969c4d65ac31297fcb4d31d4808c789152f68
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.19
Status affected
Version 0
Version < 5.19
Status unaffected
Version <= 6.1.*
Version 6.1.159
Status unaffected
Version <= 6.6.*
Version 6.6.118
Status unaffected
Version <= 6.12.*
Version 6.12.60
Status unaffected
Version <= 6.17.*
Version 6.17.10
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.079
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.