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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-40263

Input: cros_ec_keyb - fix an invalid memory access

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 to < d74864291cb8bd784d44d1d02e87109cf88666bbaffected
  • ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 to < 9cf59f4724a9ee06ebb06c76b8678ac322e850b7affected
  • ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 to < 6d81068685154535af06163eb585d6d9663ec7ecaffected
  • ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 to < 2d251c15c27e2dd16d6318425d2f7260cbd47d39affected
  • ca1eadbfcd36bec73f2a2111c28e8c7e9e8ae6c0 to < e08969c4d65ac31297fcb4d31d4808c789152f68affected

Linux Linux

Default version status: affected

  • 5.19affected
  • 0 to < 5.19unaffected
  • 6.1.159 to ≤ 6.1.*unaffected
  • 6.6.118 to ≤ 6.6.*unaffected
  • 6.12.60 to ≤ 6.12.*unaffected
  • 6.17.10 to ≤ 6.17.*unaffected
  • 6.18 to ≤ *unaffected

References