Published: 16/03/2022 Updated: 12/02/2023

CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9

CVSS v3 Base Score: 6.5 | Impact Score: 4 | Exploitability Score: 2

VMScore: 187

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Vulnerable Product	Search on Vulmon	Subscribe to Product
qemu qemu
fedoraproject fedora 33
redhat enterprise linux 6.0
redhat enterprise linux 8.0
redhat openstack platform 13.0
redhat openstack platform 10.0
redhat enterprise linux for power little endian 8.0
redhat enterprise linux for ibm z systems 8.0
redhat codeready_linux_builder -
debian debian linux 10.0

Debian Bug report logs - #984450 CVE-2021-20257 Package: qemu; Maintainer for qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Source for qemu is src:qemu (PTS, buildd, popcon) Reported by: Moritz Muehlenhoff <jmm@debianorg> Date: Wed, 3 Mar 2021 19:21:04 UTC Severity: normal Tags: security, upst ...

An infinite loop flaw was found in the e1000 NIC emulator of the QEMU This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service The highest threat from this vulnerabi ...

An infinite loop issue was found in the e1000 NIC emulator of the QEMU It occurs while processing transmit (tx) descriptors in process_tx_desc, if various descriptor fields are initialised with invalid values A guest may use this flaw to consume CPU cycles on the host resulting in a denial of service (DoS) scenario ...

Description of Problem Two security issues have been identified in Citrix Hypervisor 82 LTSR, each of which may allow privileged code in a guest VM to cause the host to crash or become unresponsive  These issues only affect Citrix Hypervisor 82 LTSRThese issues have the following CVE identifiers: CVE-2021-3416CVE-2021-20257 CVE IDDescripti ...

oss-sec mailing list archives   By Date By Thread </form>    CVE-2021-20257 QEMU: net: e1000: infinite loop while processing transmit descriptors  <!--X-Head-of ...

CWE-835 https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg07428.html https://github.com/qemu/qemu/commit/3de46e6fc489c52c9431a8a832ad8170a7569bd8 https://bugzilla.redhat.com/show_bug.cgi?id=1930087 https://www.openwall.com/lists/oss-security/2021/02/25/2 https://security.netapp.com/advisory/ntap-20220425-0003/https://security.gentoo.org/glsa/202208-27 https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984450 https://nvd.nist.gov https://alas.aws.amazon.com/AL2/ALAS-2023-2060.html

CVE-2021-20257

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