Description
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.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 1a7fc8fed2bb2e113604fde7a45432ace2056b97
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before e7265dc4c670b89611bcf5fe33acf99bc0aa294f
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before d77ef2f621cd1d605372c4c6ce667c496f6990c3
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before ba7f7c2b2b3261e7def67018c38c69b626e0e66e
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 1a2ea887a5cd7d47bab599f733d89444df018b1a
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 688c688e0bf55824f4a38f8c2180046f089a3e3b
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before b7e0535060a60cc99eafc19cc665d979714cd73a
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 4002ee98c022d671ecc1e4a84029e9ae7d8a5603
5.4.301 (semver)
5.10.246 (semver)
5.15.195 (semver)
6.1.156 (semver)
6.6.112 (semver)
6.12.53 (semver)
6.17.3 (semver)
6.18-rc1 (original_commit_for_fix)
References
git.kernel.org/...c/1a7fc8fed2bb2e113604fde7a45432ace2056b97
git.kernel.org/...c/e7265dc4c670b89611bcf5fe33acf99bc0aa294f
git.kernel.org/...c/d77ef2f621cd1d605372c4c6ce667c496f6990c3
git.kernel.org/...c/ba7f7c2b2b3261e7def67018c38c69b626e0e66e
git.kernel.org/...c/1a2ea887a5cd7d47bab599f733d89444df018b1a
git.kernel.org/...c/688c688e0bf55824f4a38f8c2180046f089a3e3b
git.kernel.org/...c/b7e0535060a60cc99eafc19cc665d979714cd73a
git.kernel.org/...c/4002ee98c022d671ecc1e4a84029e9ae7d8a5603
