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CVE-2020-35505

Status Candidate

Overview

A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the 'Information Transfer' command. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Related Files

Gentoo Linux Security Advisory 202208-27
Posted Aug 15, 2022
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202208-27 - Multiple vulnerabilities have been discovered in QEMU, the worst of which could result in remote code execution (guest sandbox escape). Versions less than 7.0.0 are affected.

tags | advisory, remote, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2020-15859, CVE-2020-15863, CVE-2020-16092, CVE-2020-35504, CVE-2020-35505, CVE-2020-35506, CVE-2020-35517, CVE-2021-20203, CVE-2021-20257, CVE-2021-20263, CVE-2021-3409, CVE-2021-3416, CVE-2021-3527, CVE-2021-3544
SHA-256 | ad311203dff6a2553339d7456d04215ce76124a29b19165d124b263667c89b9c
Ubuntu Security Notice USN-5010-1
Posted Jul 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5010-1 - Lei Sun discovered that QEMU incorrectly handled certain MMIO operations. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI commands. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 21.04. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2020-15469, CVE-2020-29443, CVE-2020-35505, CVE-2020-35517, CVE-2021-20221, CVE-2021-20257, CVE-2021-3392, CVE-2021-3409, CVE-2021-3416, CVE-2021-3527, CVE-2021-3544, CVE-2021-3545, CVE-2021-3546, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595, CVE-2021-3608
SHA-256 | c4d63dc41ceb7caa0f49a3eacc4d8caaa17252efd4913df4a83ba610c5446f40
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