Re: [PATCH] usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers()
Greg KH <[email protected]>
| Newsgroups | org.kernel.vger.stable,org.kernel.vger.linux-kernel,org.kernel.vger.linux-usb |
|---|---|
| Message-ID | <2026081701-glitzy-hush-b284@gregkh> |
On Mon, Aug 17, 2026 at 04:38:39PM +0530, Jeffin Philip wrote: > In fsg_common_set_num_buffers(), n can be 0 as conversion to u8 > using kstrtou8() in fsg_opts_num_buffers_store() can return > values from _0_ to 255. When passing 0 as "n" value to kzalloc_objs, > it can return a ZERO_SIZE_PTR, which passes the null check for > buffhds. But that is probably a bad idea, right? Shouldn't we fix that error first? thanks, greg k-h