CVE-2022-49226

Summary

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

net: asix: add proper error handling of usb read errors

Syzbot once again hit uninit value in asix driver. The problem still the same – asix_read_cmd() reads less bytes, than was requested by caller.

Since all read requests are performed via asix_read_cmd() let's catch usb related error there and add __must_check notation to be sure all callers actually check return value.

So, this patch adds sanity check inside asix_read_cmd(), that simply checks if bytes read are not less, than was requested and adds missing error handling of asix_read_cmd() all across the driver code.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd9fe64e511144c1ee7d7555b4111f09dde9692ef < b96a7265f763b37ff3138b9ca8122a950f13b00eaffected
LinuxLinuxd9fe64e511144c1ee7d7555b4111f09dde9692ef < 9ea8d2fca8fea3b17005b4dc02f8ef15f7a2fb97affected
LinuxLinuxd9fe64e511144c1ee7d7555b4111f09dde9692ef < 662ff765470ad0d11a1153d6d8e99d69a98e60b4affected
LinuxLinuxd9fe64e511144c1ee7d7555b4111f09dde9692ef < 920a9fa27e7805499cfe78491b36fed2322c02ecaffected
LinuxLinux4.9affected
LinuxLinux0 < 4.9unaffected
LinuxLinux5.15.33 <= 5.15.*unaffected
LinuxLinux5.16.19 <= 5.16.*unaffected
LinuxLinux5.17.2 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

References