linux-cve-announce - CVE-2024-53087: drm/xe: Fix possible exec queue leak in exec IOCTL

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Message-ID: <2024111906-CVE-2024-53087-6cd3@gregkh>
Date: Tue, 19 Nov 2024 18:45:07 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-53087: drm/xe: Fix possible exec queue leak in exec IOCTL

Description
===========

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

drm/xe: Fix possible exec queue leak in exec IOCTL

In a couple of places after an exec queue is looked up the exec IOCTL
returns on input errors without dropping the exec queue ref. Fix this
ensuring the exec queue ref is dropped on input error.

(cherry picked from commit 07064a200b40ac2195cb6b7b779897d9377e5e6f)

The Linux kernel CVE team has assigned CVE-2024-53087 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 6.8 with commit dd08ebf6c352 and fixed in 6.11.8 with commit 2f92b77a8ce0
	Issue introduced in 6.8 with commit dd08ebf6c352 and fixed in 6.12 with commit af797b831d89

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-53087
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/gpu/drm/xe/xe_exec.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/2f92b77a8ce043fbda2664d9be4b66bdc57f67b7
	https://git.kernel.org/stable/c/af797b831d8975cb4610f396dcb7f03f4b9908e7