CVE-2026-93274

Summary

In the Linux kernel, the following vulnerability has been resolved:

pinctrl: bcm2835: Don't remove an unregistered GPIO chip

If the devm_pinctrl_register() function fails, bcm2835_pinctrl_probe() calls gpiochip_remove() before gpiochip_add_data() has registered the GPIO chip.

This means that upon failure the gpio_chip.gpiodev is NULL resulting in a null pointer dereference inside the gpiochip_remove() function.

Remove the unnecessary function call to gpiochip_remove(). No GPIO cleanup is required because the GPIO chip has not yet been registered. Without this change there is potential for a kernel panic upon registration failure

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxba696b470839d70c6b8290c1f798bac7fb2a584c < d428863ca8baa4e9eaf781266ac219b017dcf277affected
LinuxLinux79c6d4fa1be1fd0819c50ebb4dee101bbbc4d20e < f494cfc254cd509d7cbc44b843e0a6602a520a33affected
LinuxLinux266423e60ea1b953fcc0cd97f3dad85857e434d1 < dd6b1919e41d1260259c4505777be565fb3a7efdaffected
LinuxLinux266423e60ea1b953fcc0cd97f3dad85857e434d1 < 3b978fd0a3092b25561ac26bc1a87149fa981ddcaffected
LinuxLinux266423e60ea1b953fcc0cd97f3dad85857e434d1 < b8535f5c77cc61352d02a0c038a280127a8b8208affected
LinuxLinux266423e60ea1b953fcc0cd97f3dad85857e434d1 < 68ea6dd23b732081826c36033835468383487864affected
LinuxLinux266423e60ea1b953fcc0cd97f3dad85857e434d1 < 727f043d699ab0d5d87122c2177f2b45fbe58d35affected
LinuxLinux266423e60ea1b953fcc0cd97f3dad85857e434d1 < 32711f77db0641e57fd96fdc013bf1286b9f2514affected
LinuxLinux75278f1aff5e14c904d3503c6f836c42a7afb441affected
LinuxLinux5.10.89 < 5.10.270affected
LinuxLinux5.15.12 < 5.15.221affected
LinuxLinux5.4.175 < 5.5affected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References