CVE-2024-56745 Information

Description

In the Linux kernel the following vulnerability has been resolved:

PCI: Fix reset_method_store() memory leak

In reset_method_store() a string is allocated via kstrndup() and assigned to the local \options. options is then used in with strsep() to find spaces:

while ((name = strsep(&options \ )) != NULL)

If there are no remaining spaces then options is set to NULL by strsep() so the subsequent kfree(options) doesn’t free the memory allocated via kstrndup().

Fix by using a separate tmp_options to iterate with strsep() so options is preserved.

Reference

https://git.kernel.org/stable/c/2985b1844f3f3447f2d938eff1ef6762592065a5 https://git.kernel.org/stable/c/403efb4457c0c8f8f51e904cc57d39193780c6bd https://git.kernel.org/stable/c/543d0eb40e45c6a51f1bff02f417b602e54472d5 https://git.kernel.org/stable/c/8e098baf6bc3f3a6aefc383509aba07e202f7ee0 https://git.kernel.org/stable/c/931d07ccffcc3614f20aaf602b31e89754e21c59 https://git.kernel.org/stable/c/fe6fae61f3b993160aef5fe2b7141a83872c144f