CVEvulnerability

CVE-2021-26339

5.5 MEDIUM Published 2022-05-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-05-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C

Description

A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.

Affected configurations

• amd epyc 7763 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7713p firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7713 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7663 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7643 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 75f3 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7543p firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7543 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7513 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7453 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 74f3 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7443p firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7443 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7413 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 73f3 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7343 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7313p firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7313 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 72f3 firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7773x firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7473x firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7573x firmware (< milanpi-sp3 1.0.0.7) • amd epyc 7373x firmware (< milanpi-sp3 1.0.0.7) • amd ryzen 7 5700g firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 7 5700ge firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 5 5700g firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 5 5700ge firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 3 5300g firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 3 5300ge firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 7 4700g firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 7 4700ge firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 5 4600g firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 5 4600ge firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 3 4300g firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen 3 4300ge firmware (< comboam4 v2 pi 1.2.0.6c) • amd ryzen threadripper pro 3945wx firmware • amd ryzen threadripper pro 3955wx firmware • amd ryzen threadripper pro 3975wx firmware • amd ryzen threadripper pro 3995wx firmware • amd ryzen threadripper pro 5945wx firmware • amd ryzen threadripper pro 5955wx firmware • amd ryzen threadripper pro 5965wx firmware • amd ryzen threadripper pro 5975wx firmware • amd ryzen threadripper pro 5995wx firmware • amd ryzen 3 2200u firmware • amd ryzen 3 2300u firmware • amd ryzen 3 pro 2300u firmware • amd ryzen 5 2500u firmware • amd ryzen 5 pro 2500u firmware • amd ryzen 5 2600h firmware • amd ryzen 7 2700u firmware • amd ryzen 7 pro 2700u firmware • amd ryzen 7 2800h firmware • amd ryzen 3 3300g firmware • amd ryzen 3 3300x firmware • amd ryzen 3 3100 firmware • amd ryzen 3 pro 3300u firmware • amd ryzen 5 3400g firmware • amd ryzen 5 3450g firmware • amd ryzen 5 3600 firmware … and 24 more

Related

Referenced by CWE · observed example (1)

  • CWE-1281 Sequence of Processor Instructions Leads to Unexpected Behavior weakness

References