Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: pinctrl: check the return value of pinmux_ops::get_function_name() While the API contract in docs doesn't specify it explicitly, the generic implementation of the get_function_name() callback from struct pinmux_ops - pinmux_generic_get_function_name() - can fail and return NULL. This is already checked in pinmux_check_ops() so add a similar check in pinmux_func_name_to_selector() instead of passing the returned pointer right down to strcmp() where the NULL can get dereferenced. This is normal operation when adding new pinfunctions.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before 1a7fc8fed2bb2e113604fde7a45432ace2056b97; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before e7265dc4c670b89611bcf5fe33acf99bc0aa294f; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before d77ef2f621cd1d605372c4c6ce667c496f6990c3; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before ba7f7c2b2b3261e7def67018c38c69b626e0e66e; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before 1a2ea887a5cd7d47bab599f733d89444df018b1a; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before 688c688e0bf55824f4a38f8c2180046f089a3e3b; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before b7e0535060a60cc99eafc19cc665d979714cd73a; affected f913cfce4ee49a3382a9ff95696f49a46e56e974 before 4002ee98c022d671ecc1e4a84029e9ae7d8a5603 |
| Linux / Linux | affected 4.19; unaffected 0 before 4.19; unaffected 5.4.301 through 5.4.*; unaffected 5.10.246 through 5.10.*; unaffected 5.15.195 through 5.15.*; unaffected 6.1.156 through 6.1.*; unaffected 6.6.112 through 6.6.*; unaffected 6.12.53 through 6.12.*; unaffected 6.17.3 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1a7fc8fed2bb2e113604fde7a45432ace2056b97
- https://git.kernel.org/stable/c/e7265dc4c670b89611bcf5fe33acf99bc0aa294f
- https://git.kernel.org/stable/c/d77ef2f621cd1d605372c4c6ce667c496f6990c3
- https://git.kernel.org/stable/c/ba7f7c2b2b3261e7def67018c38c69b626e0e66e
- https://git.kernel.org/stable/c/1a2ea887a5cd7d47bab599f733d89444df018b1a
- https://git.kernel.org/stable/c/688c688e0bf55824f4a38f8c2180046f089a3e3b
- https://git.kernel.org/stable/c/b7e0535060a60cc99eafc19cc665d979714cd73a
- https://git.kernel.org/stable/c/4002ee98c022d671ecc1e4a84029e9ae7d8a5603