From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 294F33E63BA for ; Fri, 8 May 2026 14:23:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250231; cv=none; b=oQCrsFO4AwfjqmAT9EonbOnG/LoHQTnHdgOQb2Xbi1dftwQ6jphWMKmXiVOwvbdBu97mfVY4GJHLA8wFrk+cRRLCQWU7wR1hUFo8hI0SkcDTF8VYr/7AXTSIY53XYOYTbNrhMFTDM7Yu8VE0qcKQyvOcjSiaFtJ4eXaCAqMEOqk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250231; c=relaxed/simple; bh=dPn9HMVX/TiI/ja6AZ8S3S+uJRzSeb+N3V2tPULXPAY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=axOxd9G0cJO60uJ7m9R/u3AKDYU0GNNQZe4ABhisKLSITXljHoAiv8NVJkuvaCgqthq4cK7rrVcpQOYHH4KFOIhiXF+5l10bW3phl1mXv7C76DcTyXNWfbW6B2yrw2dUrwk9XSNUsPojI+QthwTTqYYh5gpqUf16u1XsvJx5AUU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Wk8iJpDd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Wk8iJpDd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3C17C2BCB0; Fri, 8 May 2026 14:23:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250231; bh=dPn9HMVX/TiI/ja6AZ8S3S+uJRzSeb+N3V2tPULXPAY=; h=From:To:Cc:Subject:Date:Reply-To:From; b=Wk8iJpDdM5na4ow34W5voYoEp3ZvzBFtqlHjUnlqsfROtON1DyDy1D8J9ZYLC/fFd ccJIBjeQKWR8zg9+lEVkg6ebd7QzMdADPhNcwhQhVNWLrcjhjihmrRDcGxIcg8LXwE ddCCwBCAjD0ylNCgE6PiXhrmSBThdoW+HRUf1hnw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43396: drm/xe/sync: Fix user fence leak on alloc failure Date: Fri, 8 May 2026 16:22:05 +0200 Message-ID: <2026050838-CVE-2026-43396-a177@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2165; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=ZlVglmLpemgK2mbkJxxzRTvoX+lw1tZh/EuETXlA96Y=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/Pxat2r6F72/W/fvexedinrhNPbDmwpancyZfZu190 Mo+ufxuWUcsC4MgE4OsmCLLl208R/dXHFL0MrQ9DTOHlQlkCAMXpwBMxGEKwzwtkQXTPyq/vHZA tZv5ZFi28Mnb6/oY5ukv6ioxUdn9+dwm5oiAB5KnRDWM/gMA X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/xe/sync: Fix user fence leak on alloc failure When dma_fence_chain_alloc() fails, properly release the user fence reference to prevent a memory leak. (cherry picked from commit a5d5634cde48a9fcd68c8504aa07f89f175074a0) The Linux kernel CVE team has assigned CVE-2026-43396 to this issue. Affected and fixed versions =========================== Issue introduced in 6.18 with commit 0995c2fc39b0f998d40f5d276f67ae22fc1c37c3 and fixed in 6.18.20 with commit 05edc78eb4699e8e000a62aaa8dace50a17e19e3 Issue introduced in 6.18 with commit 0995c2fc39b0f998d40f5d276f67ae22fc1c37c3 and fixed in 6.19.9 with commit f8f90b33934b307f6e4599b9fae38aa1ee5441a7 Issue introduced in 6.18 with commit 0995c2fc39b0f998d40f5d276f67ae22fc1c37c3 and fixed in 7.0 with commit 0879c3f04f67e2a1677c25dcc24669ce21eb6a6c 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-2026-43396 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_sync.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/05edc78eb4699e8e000a62aaa8dace50a17e19e3 https://git.kernel.org/stable/c/f8f90b33934b307f6e4599b9fae38aa1ee5441a7 https://git.kernel.org/stable/c/0879c3f04f67e2a1677c25dcc24669ce21eb6a6c