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CVE-2018-19364

Status Candidate

Overview

hw/9pfs/cofile.c and hw/9pfs/9p.c in QEMU can modify an fid path while it is being accessed by a second thread, leading to (for example) a use-after-free outcome.

Related Files

Debian Security Advisory 4454-1
Posted May 31, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4454-1 - Multiple security issues were discovered in QEMU, a fast processor emulator, which could result in denial of service, the execution of arbitrary code or information disclosure.

tags | advisory, denial of service, arbitrary, info disclosure
systems | linux, debian
advisories | CVE-2018-11806, CVE-2018-12617, CVE-2018-16872, CVE-2018-17958, CVE-2018-18849, CVE-2018-18954, CVE-2018-19364, CVE-2018-19489, CVE-2019-12155, CVE-2019-3812, CVE-2019-6778, CVE-2019-9824
SHA-256 | cba000ba6722bbd7ea6515d914172a949427ee73bb4a672c4b7065b7f6df2144
Ubuntu Security Notice USN-3826-1
Posted Nov 26, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3826-1 - Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled NE2000 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. It was discovered that QEMU incorrectly handled the Slirp networking back-end. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-10839, CVE-2018-11806, CVE-2018-12617, CVE-2018-16847, CVE-2018-17958, CVE-2018-17962, CVE-2018-17963, CVE-2018-18849, CVE-2018-18954, CVE-2018-19364
SHA-256 | 4e4c876bb878a34b2dd16b55e3b1d2a08ed115428511e04586ecb54058caa47b
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