CVE-2025-40263 In the Linux kernel, the following vulnerability has been resolved: Input: cros_ec_keyb - fix an invalid memory access…
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Linux 6.18 | premières → < 6.18 | 6.18 |
| Linux 6.17 | premières → < 6.17.10 | 6.17.10 |
| Linux 6.12 | premières → < 6.12.60 | 6.12.60 |
| Linux 6.6 | premières → < 6.6.118 | 6.6.118 |
| Linux 6.1 | premières → < 6.1.159 | 6.1.159 |
| Linux | 5.19 | Pas de correctif indiqué |
| RUGGEDCOM RST2428P 4.0 | premières → < 4.0 | 4.0 |