PT-2020-6478 · Qemu+9 · Qemu+9
Published
2020-10-28
·
Updated
2022-09-23
·
CVE-2020-27617
CVSS v2.0
6.8
Medium
| Vector | AV:N/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
QEMU version 4.2.1
Description
The issue is related to the
eth get gso type function in the net/eth.c component of the QEMU hardware emulator, which is associated with incorrect accounting of external emulator resources. This can be exploited by a remote attacker to cause a denial of service. Specifically, a guest OS user can trigger an assertion failure, allowing a guest to crash the QEMU process via packet data that lacks a valid Layer 3 protocol.Recommendations
For QEMU version 4.2.1, consider disabling the
eth get gso type function in the net/eth.c component as a temporary workaround until a patch is available. Restrict access to the net/eth.c component to minimize the risk of exploitation. Avoid using packet data that lacks a valid Layer 3 protocol in the affected QEMU process until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Assertion Failure
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Qemu
Red Hat
Rocky Linux
Suse
Ubuntu