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CVE-2020-12829

Status Candidate

Overview

In QEMU through 5.0.0, an integer overflow was found in the SM501 display driver implementation. This flaw occurs in the COPY_AREA macro while handling MMIO write operations through the sm501_2d_engine_write() callback. A local attacker could abuse this flaw to crash the QEMU process in sm501_2d_operation() in hw/display/sm501.c on the host, resulting in a denial of service.

Related Files

Debian Security Advisory 4760-1
Posted Sep 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4760-1 - Multiple security issues were discovered in QEMU, a fast processor emulator.

tags | advisory
systems | linux, debian
advisories | CVE-2020-12829, CVE-2020-14364, CVE-2020-15863, CVE-2020-16092
SHA-256 | 9ec9643bb7edebad1c8a64c425392f1a29bfedae27d77a06866086970cb042aa
Ubuntu Security Notice USN-4467-1
Posted Aug 20, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4467-1 - Ziming Zhang and VictorV discovered that the QEMU SLiRP networking implementation incorrectly handled replying to certain ICMP echo requests. An attacker inside a guest could possibly use this issue to leak host memory to obtain sensitive information. This issue only affected Ubuntu 18.04 LTS. Eric Blake and Xueqiang Wei discovered that the QEMU NDB implementation incorrectly handled certain requests. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-10756, CVE-2020-10761, CVE-2020-12829, CVE-2020-13253, CVE-2020-13361, CVE-2020-13362, CVE-2020-13659, CVE-2020-13754, CVE-2020-13765, CVE-2020-13800, CVE-2020-14415, CVE-2020-15863, CVE-2020-16092
SHA-256 | 9aa3179b34eb601658a9a487805ca5302a3e7b10616c6b4f88ebda6983d3906c
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