linux-cve-announce - CVE-2025-71076: drm/xe/oa: Limit num_syncs to prevent oversized allocations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2026011326-CVE-2025-71076-19ff@gregkh>
Date: Tue, 13 Jan 2026 16:31:34 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-71076: drm/xe/oa: Limit num_syncs to prevent oversized allocations

From: Greg Kroah-Hartman <gregkh@...nel.org>

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

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

drm/xe/oa: Limit num_syncs to prevent oversized allocations

The OA open parameters did not validate num_syncs, allowing
userspace to pass arbitrarily large values, potentially
leading to excessive allocations.

Add check to ensure that num_syncs does not exceed DRM_XE_MAX_SYNCS,
returning -EINVAL when the limit is violated.

v2: use XE_IOCTL_DBG() and drop duplicated check. (Ashutosh)

(cherry picked from commit e057b2d2b8d815df3858a87dffafa2af37e5945b)

The Linux kernel CVE team has assigned CVE-2025-71076 to this issue.


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

	Issue introduced in 6.12.17 with commit 803d418b73387fda392ddd83eace757ac25cf15d and fixed in 6.12.64 with commit b963636331fb4f3f598d80492e2fa834757198eb
	Issue introduced in 6.13 with commit c8507a25cebd179db935dd266a33c51bef1b1e80 and fixed in 6.18.3 with commit 338849090ee610ff6d11e5e90857d2c27a4121ab
	Issue introduced in 6.13 with commit c8507a25cebd179db935dd266a33c51bef1b1e80 and fixed in 6.19-rc2 with commit f8dd66bfb4e184c71bd26418a00546ebe7f5c17a

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-2025-71076
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_oa.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/b963636331fb4f3f598d80492e2fa834757198eb
	https://git.kernel.org/stable/c/338849090ee610ff6d11e5e90857d2c27a4121ab
	https://git.kernel.org/stable/c/f8dd66bfb4e184c71bd26418a00546ebe7f5c17a