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Message-Id: <169601489950.3012131.9568928913525935036.b4-ty@chromium.org> Date: Fri, 29 Sep 2023 12:15:00 -0700 From: Kees Cook <keescook@...omium.org> To: Noralf Trønnes <noralf@...nnes.org>, David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, Peter Stuge <peter@...ge.se>, "Gustavo A. R. Silva" <gustavoars@...nel.org> Cc: Kees Cook <keescook@...omium.org>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH][next] drm/gud: Use size_add() in call to struct_size() On Fri, 15 Sep 2023 12:43:20 -0600, Gustavo A. R. Silva wrote: > If, for any reason, the open-coded arithmetic causes a wraparound, the > protection that `struct_size()` adds against potential integer overflows > is defeated. Fix this by hardening call to `struct_size()` with `size_add()`. > > Applied to for-next/hardening, thanks! [1/1] drm/gud: Use size_add() in call to struct_size() https://git.kernel.org/kees/c/836ccb46073e Take care, -- Kees Cook
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