oss-sec mailing list archives
Re: CVE request Qemu: display: virtio-gpu-3d: OOB access while reading virgl capabilities
From: <cve-assign () mitre org>
Date: Thu, 22 Dec 2016 18:57:06 -0500
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Quick Emulator(Qemu) built with the Virtio GPU Device emulator support is vulnerable to an out of bounds memory access issue. It could occur while processing 'VIRTIO_GPU_CMD_GET_CAPSET' command. A guest user/process could use this flaw to crash the Qemu process instance on a host, resulting in DoS. https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg01903.html
retrieves the maximum capabilities size to fill in the response object. It continues to fill in capabilities even if retrieved 'max_size' is zero(0), thus resulting in OOB access. Add check to avoid it.
Use CVE-2016-10028. This is not yet available at http://git.qemu.org/?p=qemu.git;a=history;f=hw/display/virtio-gpu-3d.c but that may be an expected place for a later update. - -- CVE Assignment Team M/S M300, 202 Burlington Road, Bedford, MA 01730 USA [ A PGP key is available for encrypted communications at http://cve.mitre.org/cve/request_id.html ] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCAAGBQJYXGfhAAoJEHb/MwWLVhi2GN4P/0mDg9MtY/9ZEuTj9P0t97Cz By4R/z4PK8qeFBGVYo5ftRVNRKit77pkB1rCLNkeaL891RjNya3LcFqb8JBLm6g3 OP6LXA2GhkNdMNEFTAPg2pmnLqFdauHiRtIm/V9bfbCRbdZ+7Ys2rAcRhfc8N85H P+V1dHQIvx7VQXwo4pfRdMWXaJZJvbq6Dvvn4wFgcw32HJ39irsiWLa1x3quNmhL t5jBL3zp6lfTOO7fqUGLUOk9Rs/g2N5XrUTZ0Rc7Cw+1xjy/luWObIGF5fmnkW6M LbBlVoZmnZBJanoSdPTiwy5fURq1T1IjDC3n1ZRB+poVRsIOvCoFYJAozYHwOYeg g/kQwY+DYAUh3QE0SHRZJmO/TILS8ghtqrldZtS4WP87d+CMWi6PzMBumScIH9S3 zPZSs0KLuXhWnus4yrFcYHrc/sonqZSfCvejw/Un2XxFb6fjc8VkwEzWZcFlZ+y8 EpyDpSjflZcMsqzTK/ETogYtVcKGjjyg7b4tDRrP5Vjm98HmPSiCC+bLtqTcsF2p 5oBGCwQX2dSNMTKMltUPTNeIdotZkF/6ym6TKnAs9YGGQI0ioxFHuT/6FhF6GAYA S2Y63sZbbTxDthsohCQBv/KPJFlHZyo1ih1dxRiVXGTqRjYWc+QZvz+mOJ0A07oT 2h/TVl7vPCyM3UTD9Tym =GOF0 -----END PGP SIGNATURE-----
Current thread:
- CVE request Qemu: display: virtio-gpu-3d: OOB access while reading virgl capabilities P J P (Dec 20)
- Re: CVE request Qemu: display: virtio-gpu-3d: OOB access while reading virgl capabilities cve-assign (Dec 22)