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 F1D9A472F69; Tue, 21 Jul 2026 19:50:53 +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=1784663455; cv=none; b=DNgYdY76EXJazxrQKm0+EffOkFJL1NDq7lj9m/oZGcsLQXL4Bnpo6nbmZYnCHaP9WbiMHz0KQhYqDYmroESNFjU7Mpyn6/sgjnmKcuClZh4XXXfrjEGMjrPGfQX/VFUazUX6uh6XASrxR84/GQDxkW5OOcFJGArDPsvQClefN3Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784663455; c=relaxed/simple; bh=3jhoxhGj5tnlB2CDIWDXiJN1+LDz3u/EvlBqEuEgC9c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AgtBPE6pC4LVGuk8FT56pBgG+yQB4BIWQqGJOlKmosGoY75tOrIDyCx5d5la2QuXX/ERjjIjVRzU6OnZwTMyWegWumAsOo5/fgJV3jiOV9vljHAUuUMJNKjpbN3gfjmvGaCS5noLgDMyyDC2+wyncqDoXr4/wyJcWva8FWgfY7k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=aW9xrme0; 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="aW9xrme0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59C921F00A3A; Tue, 21 Jul 2026 19:50:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784663453; bh=MJN2nO6KWALc/xHjWAY2DNSUmPeJ+Wz6IF84cOItQx8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=aW9xrme0CAIGOobBaByLkFLlCMQ4xUKI85HrOVN2KvPsUmpXiPahypGpwoTQKOBp1 wXNWOQm1uoxI0jzryBmWJ32Z9B81pCa7pT6avtYZubWzHUmlQuJKZNZSedTpLWEM4j tRTtEYGRerDBec/WVCf6sIYg6Cy+V8qV/MqGkJcg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bibo Mao , Huacai Chen Subject: [PATCH 6.12 0827/1276] LoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt() Date: Tue, 21 Jul 2026 17:21:10 +0200 Message-ID: <20260721152504.569170088@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152446.065700225@linuxfoundation.org> References: <20260721152446.065700225@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bibo Mao commit 09b318ab77b7a4fc9987fd98d1525fc55ddc2617 upstream. Function kvm_vcpu_ioctl_interrupt() can be called from userspace, here add irq validility cheking in kvm_vcpu_ioctl_interrupt(). Cc: stable@vger.kernel.org Fixes: f45ad5b8aa93 ("LoongArch: KVM: Implement vcpu interrupt operations") Signed-off-by: Bibo Mao Signed-off-by: Huacai Chen Signed-off-by: Greg Kroah-Hartman --- arch/loongarch/kvm/vcpu.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -1429,6 +1429,10 @@ void kvm_lose_fpu(struct kvm_vcpu *vcpu) int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { int intr = (int)irq->irq; + unsigned int vector = abs(intr); + + if (vector >= EXCCODE_INT_NUM) + return -EINVAL; if (intr > 0) kvm_queue_irq(vcpu, intr);