From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 2D81430C16A for ; Sat, 15 Aug 2026 06:24:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786775072; cv=none; b=jtzpjfOBkm3zBk1sEJ0Rvsgx/s4OtL9sTnd3djhI5j0TuNYqti+s5O/qgFDUQ17iWoDDE3tPoCQK1IEZ4TdSp5HzNzvl2qTAd/JtxF93XxlxMq4wkLZ0FnLfax4Vj/rCzcqQfFLPAy0yIPJtGRFIjn/k4vnSgEw2ayWmRcqpZI8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786775072; c=relaxed/simple; bh=bSvgQnonyTYqDFTS01pe2VRNfjEmmd9FjAGRJjpBJGA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=AYIS4FEL2gTidOILvrCsGH02y9guJkOM8lrQhBK7Zg32tTP/HBHKurz7YN3Knnmai4eIJQ8Zj4Iyb01nyO63HWRTnwpYuXfvadiFRErDei5hQEYIoQ6HKqtF685lZTCGrCLkrL7uiz5fd+OyrZZ4h83UtQRnUkqw8uLKMCtKggA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=J6fXjNyY; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="J6fXjNyY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 819DD1F000E9; Sat, 15 Aug 2026 06:24:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786775071; bh=3yQkyj3clV2i/OQWrKDQB8j77Nl8ZPLYOhLjfpNglpE=; h=From:To:Cc:Subject:Date:Reply-To; b=J6fXjNyYzvZFlrBNQccz5sucpM0x9oICmx/FAzHVlQI1y204K0MHjBi5/Av42k+BU 4VwvjwQt1DRzJL+2HocB0+pk17FsTSrBiBllz9n87hCgedDZ90dqdR9KIVd0nh+86j ZRAqI4pwGwKZWByTOwbgCu9/ecTrIF5Rir2dmqH4= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72362: drm/xe/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry() Date: Sat, 15 Aug 2026 15:07:21 +0900 Message-ID: <2026081514-CVE-2026-72362-db77@gregkh> X-Mailer: git-send-email 2.55.0 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=2821; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=61uVs7woTYy3eSp2A6zr9IU3RMdyFIcxHdNa5nmwTy8=; b=kA0DAAIRMUfUDdst+ykByyZiAGqAAOajPBeMOJ5e0dY1X01b0F8QdxMoeLEMbyY8JJ+dPBe1r 4hdBAARAgAdFiEE9LYMxb94wiFKMT3LMUfUDdst+ykFAmqAAOYACgkQMUfUDdst+ynpLwCfViJ+ xJyeVf9XlpypGS2K39UDuQUAnRQJ9dXA5JC2QMVty9L0czH1ODDX 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/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry() The page-table walk framework may pass a NULL *child pointer for unpopulated entries. xe_pt_zap_ptes_entry() called container_of(*child) before checking for NULL, then dereferenced the result, causing a crash. Move the container_of() call after a NULL guard, so the function returns early instead of proceeding with an invalid pointer. XE_WARN_ON is kept to help root cause the issue, but we now bail instead of crashing the driver. v2: Comment that triggering XE_WARN_ON is unexpected behavior (Matt Brost) (cherry picked from commit b9297d19d9df5d4b6c994648570c5dcd1cac68ff) The Linux kernel CVE team has assigned CVE-2026-72362 to this issue. Affected and fixed versions =========================== Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 6.12.97 with commit ff330ce16c846b70164ff0eb544c81219d4c5c08 Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 6.18.40 with commit 78b1074966d290d4517f42bc81e13c4349368d12 Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 7.1.5 with commit d94b9922b2ae5ee6e900f8da0bd537b251c6110c Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 7.2-rc2 with commit 3feeb667197bd58a17f4edfdbcad249ffcb3c864 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-2026-72362 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_pt.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/ff330ce16c846b70164ff0eb544c81219d4c5c08 https://git.kernel.org/stable/c/78b1074966d290d4517f42bc81e13c4349368d12 https://git.kernel.org/stable/c/d94b9922b2ae5ee6e900f8da0bd537b251c6110c https://git.kernel.org/stable/c/3feeb667197bd58a17f4edfdbcad249ffcb3c864