CVE-2026-64420

In the Linux kernel, the following vulnerability has been resolved: mfd: cros_ec: Delay dev_set_drvdata() until probe success If ec_device_probe() fails, cros_ec_class_release releases memory for the cros_ec_dev structure. However, because the drvdata was already set, sub-drivers like cros_ec_typec can still retrieve the stale pointer via the platform device. This leads to a use-after-free when cros_ec_typec attempts to access &typec->ec->ec->dev on a device that has already been released. Move dev_set_drvdata() to ensure that the pointer is only made available once all initialization steps have succeeded. sysfs: cannot create duplicate filename '/class/chromeos/cros_ec' Call trace: sysfs_do_create_link_sd+0x94/0xdc sysfs_create_link+0x30/0x44 device_add_class_symlinks+0x90/0x13c device_add+0xf0/0x50c ec_device_probe+0x150/0x4f0 platform_probe+0xa0/0xe0 ... BUG: KASAN: invalid-access in __memcpy+0x44/0x230 Write at addr f5ffff809e2d33ac by task kworker/u32:5/125 Pointer tag: [f5], memory tag: [fe] Tainted : [W]=WARN, [O]=OOT_MODULE Hardware name: Google Navi unprovisioned 0x7FFFFFFF/sku0 board/sku3 Workqueue: events_unbound deferred_probe_work_func Call trace: __memcpy+0x44/0x230 cros_ec_check_features+0x60/0xcc [cros_ec_proto] cros_typec_probe+0xe8/0x6e0 [cros_ec_typec] platform_probe+0xa0/0xe0

• https://git.kernel.org/stable/c/24522713034d521ea4b5f5f36342e2b2f7e73bd6
• https://git.kernel.org/stable/c/257203d83204b192d1265a916b42ca0d499bb117
• https://git.kernel.org/stable/c/729ae27dc2503a7c1f92da1859efb45da03e4fa0
• https://git.kernel.org/stable/c/8b2c1d41bc36c100b38ce5ee6def246c527eaf8a
• https://git.kernel.org/stable/c/b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d
• https://git.kernel.org/stable/c/ed2941e5db016a0c600b25f1972620e6e223d9fa
• https://git.kernel.org/stable/c/f7e81dc181d9fe8ab977158042cd193e8cc12091
• https://git.kernel.org/stable/c/fc030c5b116f668d4ca86dca63742ddbc98d1665

Published

Jul 25, 2026

Last Modified

Aug 11, 2026

Status

Awaiting Analysis

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