linux-kernel - Re: CVE-2024-39471: drm/amdgpu: add error handle to avoid out-of-bounds

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Message-ID: <2651470974c130f8026b4c13e91f37ce67dc69fb.camel@oracle.com>
Date: Wed, 24 Jul 2024 10:24:20 +0000
From: Siddh Raman Pant <siddh.raman.pant@...cle.com>
To: "stable@...r.kernel.org" <stable@...r.kernel.org>
CC: "alexander.deucher@....com" <alexander.deucher@....com>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "dan.carpenter@...aro.org" <dan.carpenter@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bob.zhou@....com" <bob.zhou@....com>
Subject: Re: CVE-2024-39471: drm/amdgpu: add error handle to avoid
 out-of-bounds

(Mail V2: Send to correct mailing list and CCing relevant people.)

On Tue, 25 Jun 2024 16:29:04 +0200, Greg Kroah-Hartman wrote:
> In the Linux kernel, the following vulnerability has been resolved:
> 
> drm/amdgpu: add error handle to avoid out-of-bounds
> 
> if the sdma_v4_0_irq_id_to_seq return -EINVAL, the process should
> be stop to avoid out-of-bounds read, so directly return -EINVAL.
> 
> The Linux kernel CVE team has assigned CVE-2024-39471 to this issue.

This commit has a bug which was fixed by 6769a23697f1. It should be
immediately backported, otherwise this "fix" doesn't do anything since
gcc will optimise out the check.

Thanks,
Siddh

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