Re: CVE-2024-46805: drm/amdgpu: fix the waring dereferencing hive

[Michal Koutný]

Hello.

On Fri, Sep 27, 2024 at 02:36:10PM GMT, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> In the Linux kernel, the following vulnerability has been resolved:
> 
> drm/amdgpu: fix the waring dereferencing hive
> 
> Check the amdgpu_hive_info *hive that maybe is NULL.

This "fix" introduces (or transforms) a CVE for panic_on_warn=1 users
(if the NULL is reachable by unprivileged users).

The NULL ptr dereference thus needs a better fix (I checked in
v6.12-rc1).

Michal

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