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 EBB8058FD0C for ; Fri, 11 Sep 2026 20:04:32 +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=1789157080; cv=none; b=jeez8OMLR9JyiFwZq6T4CDcrOMwwOC882sxw9U2eIZjrYfW3LDvubr6X3aCNDYwNugnUrorpntGGKJha6yIcmaEbvPQeuTzrvL5z5BdwrCQ2AbUGzHIfmD+KaxzqZK/nm/RaNgLMD+ndotZZrTGXbq+VTfPtiId1vBXmANVLM34= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789157080; c=relaxed/simple; bh=mmi7MJI29rgZMHnCtYRF/zxc+ZIqnHTIZNzk0zajaiM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=gXKPgZoWuwgp4iHKTaa4kUlYpaEgUy56H+j4qYhlxxq13W55UpWk/AJxLOVxTn0R9DE2vB1xIKbylKMeMWHUMTVR7oVyJ3JOhhSN4EmOHXYgjkaIcjBe4O/FxYwgRLw2fbWQDFlxTMRZ+UFVhA3u3xmcH/M5ZTe9wbA/xt4E6Mg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SJ/1P3Rb; 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="SJ/1P3Rb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 13ADB1F0089B; Fri, 11 Sep 2026 20:04:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789157072; bh=El+IM8PCc91W0gmnbPJ1uyhebO6ck3xxbNHNbM6gchg=; h=From:To:Cc:Subject:Date:Reply-To; b=SJ/1P3RbnktBJ228lpyId6jlzfQdwSwAJELhxFMfHmc899vYCTOOvc+enJZdC6sUo AWEnEem50zZE5dP1+haRx2WQrFZfCInz3VJZAXCtWaZLgWoX/rIXArDUXiMskrl5Tk gnKhCxRuixrRGmXdeweOSnQcrht+DLvLEECG7/zE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-89727: KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID Date: Fri, 11 Sep 2026 21:46:56 +0200 Message-ID: <2026091101-CVE-2026-89727-40d7@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=2293; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=9iemmg9mF3cW+UvVw+UQNLF1XOYHy01JuBPJfGeTnUw=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlLIjtT7A5ocnFM0moL56tZ0rBfpqFm8tHABxECbq8fN e3y3l7REcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABPxbGFYcFxkScO3wMRzVY2q BeFe85iWB74zYpjvFrRrt6fO2wcTSg/KBiUceWdtePotAA== 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: KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID vgic_v2_deactivate() passes the INTID a guest wrote to GICV_DIR straight to vgic_get_vcpu_irq(), and treats a failed lookup as a "can't happen" condition with WARN_ON_ONCE(). The guest can make it happen at will, though: for any INTID outside of the implemented SGI, PPI and SPI ranges the lookup returns NULL, since GICv2 has no LPIs. A guest running with EOImode==1 writing such an INTID to GICV_DIR triggers the WARN, and panics hosts running with panic_on_warn. Drop the WARN and ignore failed lookups. The Linux kernel CVE team has assigned CVE-2026-89727 to this issue. Affected and fixed versions =========================== Issue introduced in 6.19 with commit 255de897e7fb918a34845167c572b5bf8e1d9d79 and fixed in 7.2.4 with commit 78b95c571d021391153a5ac7981e9e4d5cc856a3 Issue introduced in 6.19 with commit 255de897e7fb918a34845167c572b5bf8e1d9d79 and fixed in 7.3-rc1 with commit c6d9c8ac6521d3049ec90ac58bebd23ed03ac496 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-2026-89727 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: arch/arm64/kvm/vgic/vgic-v2.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/78b95c571d021391153a5ac7981e9e4d5cc856a3 https://git.kernel.org/stable/c/c6d9c8ac6521d3049ec90ac58bebd23ed03ac496