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(unknown []) by gzsmtp1 (Coremail) with SMTP id PCgvCgBXQmosBT1qIiv2DQ--.25072S3; Thu, 25 Jun 2026 18:38:37 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=G0 ytJBKH6ieo2ArfDwfcC6VgasgMg/pQ2KxrNKkOdlY=; b=erSzAm/VwytZ7UzagU i9/e/Bh0G+T2dXqsM78RdPL+6LtYYdmMjFjkshy82G6YhnwcM27yQWmcWX/SCDhv glapkMGg4h9pBj+iIQVktgTLgxAVaDHj4iRKtsboPordKpqdEJ6A6qoRk2qB961w niHVcb4ZaULqV375+LpLLDhNU= From: helei To: qemu-devel@nongnu.org Cc: arei.gonglei@huawei.com, zhenwei.pi@linux.dev, mst@redhat.com, helei Subject: [PATCH RESEND v2 1/1] hw/virtio-crypto: enforce max akcipher key length Date: Thu, 25 Jun 2026 18:38:36 +0800 Message-ID: <20260625103836.3835-2-lhestz@163.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260625103836.3835-1-lhestz@163.com> References: <20260625103836.3835-1-lhestz@163.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: PCgvCgBXQmosBT1qIiv2DQ--.25072S3 X-Coremail-Antispam: 1Uf129KBjvdXoW7XFWDuw4DZF47KF48Gw4Durg_yoW3urb_A3 yku3yxWw4rXF10va1UArWrWr12g3WfAFnF9FZIg3W8A3Wxta1DJF1xJrs5WF47Z3y8JF45 GF45Ars0gw13ujkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRD9ND5UUUUU== X-Originating-IP: [117.129.70.70] X-CM-SenderInfo: pokh23r26rljoofrz/xtbC8w02YWo9BS1gxQAA3z Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=117.135.210.5; envelope-from=lhestz@163.com; helo=m16.mail.163.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @163.com) X-ZM-MESSAGEID: 1782384165687158500 Content-Type: text/plain; charset="utf-8" enforce the global max_size boundary for akcipher session creation Signed-off-by: helei --- hw/virtio/virtio-crypto.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c index 6fceb39681..79e2acb56c 100644 --- a/hw/virtio/virtio-crypto.c +++ b/hw/virtio/virtio-crypto.c @@ -216,6 +216,12 @@ virtio_crypto_create_asym_session(VirtIOCrypto *vcrypt= o, return -VIRTIO_CRYPTO_NOTSUPP; } =20 + if (unlikely(keylen > vcrypto->conf.max_size)) { + error_report("virtio-crypto length of akcipher key is too large: %= u", + keylen); + return -VIRTIO_CRYPTO_ERR; + } + if (keylen) { asym_info->key =3D g_malloc(keylen); if (iov_to_buf(iov, out_num, 0, asym_info->key, keylen) !=3D keyle= n) { --=20 2.43.0