CVE-2022-50165
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.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 3.17 | 4.14.291 |
| linux / linux_kernel | 4.15 | 4.19.256 |
| linux / linux_kernel | 4.20 | 5.4.211 |
| linux / linux_kernel | 5.5 | 5.10.137 |
| linux / linux_kernel | 5.11 | 5.15.61 |
| linux / linux_kernel | 5.16 | 5.18.18 |
| linux / linux_kernel | 5.19 | 5.19.2 |
- https://git.kernel.org/stable/c/409bd72e544fdf4809ea0dac337bb5a1f11a25a9
- https://git.kernel.org/stable/c/52b11a48cf073e0aab923ae809a765d756cecf13
- https://git.kernel.org/stable/c/689e5caf63e99e15d2f485ec297c1bf9243e0e28
- https://git.kernel.org/stable/c/6c5fee83bdbeffe8d607d1ab125122a75f40bd1a
- https://git.kernel.org/stable/c/b13c84e877d7a3095bacb14665db304b2c00e95f
- https://git.kernel.org/stable/c/c9fde3a44da566d8929070ab6bda4f0dfa9955d0
- https://git.kernel.org/stable/c/d4742c886043b69d2d058bfde3998ef333b66595
- https://git.kernel.org/stable/c/d578e0af3a003736f6c440188b156483d451b329
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