CVE-2022-50165

Summary

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

wifi: wil6210: debugfs: fix uninitialized variable use in wil_write_file_wmi()

Commit 7a4836560a61 changes simple_write_to_buffer() with memdup_user() but it forgets to change the value to be returned that came from simple_write_to_buffer() call. It results in the following warning:

warning: variable 'rc' is uninitialized when used here [-Wuninitialized] return rc; ^~

Remove rc variable and just return the passed in length if the memdup_user() succeeds.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < b13c84e877d7a3095bacb14665db304b2c00e95faffected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < c9fde3a44da566d8929070ab6bda4f0dfa9955d0affected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < 52b11a48cf073e0aab923ae809a765d756cecf13affected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < 6c5fee83bdbeffe8d607d1ab125122a75f40bd1aaffected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < 689e5caf63e99e15d2f485ec297c1bf9243e0e28affected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < d4742c886043b69d2d058bfde3998ef333b66595affected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < 409bd72e544fdf4809ea0dac337bb5a1f11a25a9affected
LinuxLinuxff974e4083341383d3dd4079e52ed30f57f376f0 < d578e0af3a003736f6c440188b156483d451b329affected
LinuxLinux3.17affected
LinuxLinux0 < 3.17unaffected
LinuxLinux4.14.291 <= 4.14.*unaffected
LinuxLinux4.19.256 <= 4.19.*unaffected
LinuxLinux5.4.211 <= 5.4.*unaffected
LinuxLinux5.10.137 <= 5.10.*unaffected
LinuxLinux5.15.61 <= 5.15.*unaffected
LinuxLinux5.18.18 <= 5.18.*unaffected
LinuxLinux5.19.2 <= 5.19.*unaffected
LinuxLinux6.0 <= *unaffected

Weaknesses

References