CVE-2021-46755
High
Description
Failure to unmap certain SysHub mappings in error paths of the ASP (AMD Secure Processor) bootloader may allow an attacker with a malicious bootloader to exhaust the SysHub resources resulting in a potential denial of service.
SeverityHigh
CVSS7.5
Exploit probability—
ProductAmd Ryzen 5500 Firmware
PublishedMay 9, 2023
First seenMay 9, 2023
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| amd ryzen_5500_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5600_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5600g_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5600x_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5700g_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5700x_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5800x3d_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5800x_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5900x_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_5950x_firmware | comboam4_v2_pi_1.2.0.8, comboam4v2_pi_1.2.0.6 | — |
| amd ryzen_3100_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3300x_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3500_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3500x_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3600_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3600x_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3600xt_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3800x_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3800xt_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3900_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3900x_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3900xt_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
| amd ryzen_3950x_firmware | comboam4_v2_pi_1.2.0.8, comboam4pi_1.0.0.9 | — |
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