linux-cve-announce - CVE-2025-37803: udmabuf: fix a buf size overflow issue during udmabuf creation

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Message-ID: <2025050814-CVE-2025-37803-0c5c@gregkh>
Date: Thu,  8 May 2025 08:39:12 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37803: udmabuf: fix a buf size overflow issue during udmabuf creation

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

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

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

udmabuf: fix a buf size overflow issue during udmabuf creation

by casting size_limit_mb to u64  when calculate pglimit.

The Linux kernel CVE team has assigned CVE-2025-37803 to this issue.


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

	Fixed in 5.4.293 with commit e84a08fc7e25cdad5d9a3def42cc770ff711193f
	Fixed in 5.10.237 with commit 13fe12c037b470321436deec393030c6153cfeb9
	Fixed in 5.15.181 with commit 373512760e13fdaa726faa9502d0f5be2abb3d33
	Fixed in 6.1.136 with commit 3f6c9d66e0f8eb9679b57913aa64b4d2266f6fbe
	Fixed in 6.6.89 with commit b2ff4e9c599b000833d16a917f519aa2e4a75de2
	Fixed in 6.14.5 with commit 2b8419c6ecf69007dcff54ea0b9f0b215282c55a
	Fixed in 6.15-rc2 with commit 021ba7f1babd029e714d13a6bf2571b08af96d0f

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-2025-37803
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/dma-buf/udmabuf.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/e84a08fc7e25cdad5d9a3def42cc770ff711193f
	https://git.kernel.org/stable/c/13fe12c037b470321436deec393030c6153cfeb9
	https://git.kernel.org/stable/c/373512760e13fdaa726faa9502d0f5be2abb3d33
	https://git.kernel.org/stable/c/3f6c9d66e0f8eb9679b57913aa64b4d2266f6fbe
	https://git.kernel.org/stable/c/b2ff4e9c599b000833d16a917f519aa2e4a75de2
	https://git.kernel.org/stable/c/2b8419c6ecf69007dcff54ea0b9f0b215282c55a
	https://git.kernel.org/stable/c/021ba7f1babd029e714d13a6bf2571b08af96d0f