#VU65205 Processor optimization removal or modification of security-critical code in AMD products - CVE-2022-29900

Vulnerability identifier: #VU65205

Vulnerability risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-29900

CWE-ID: CWE-1037

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
AMD Athlon X4 processor
Hardware solutions / Firmware
AMD Ryzen Threadripper PRO processor
Hardware solutions / Firmware
2nd Gen AMD Ryzen Threadripper processors
Hardware solutions / Firmware
3rd Gen AMD Ryzen Threadripper processors
Hardware solutions / Firmware
7th Generation AMD A-Series APUs
Hardware solutions / Firmware
AMD Ryzen 2000 series Desktop processor
Hardware solutions / Firmware
AMD Ryzen 3000 Series Desktop processor
Hardware solutions / Firmware
AMD Ryzen 4000 Series Desktop processors with Radeon graphics
Hardware solutions / Firmware
AMD Ryzen 2000 Series Mobile processor
Hardware solutions / Firmware
AMD Athlon 3000 Series Mobile processors with Radeon Graphics
Hardware solutions / Firmware
AMD Ryzen 3000 Series Mobile processor
Hardware solutions / Firmware
2nd Gen AMD Ryzen Mobile processor with Radeon graphics
Hardware solutions / Firmware
AMD Ryzen 4000 Series Mobile processors with Radeon graphics
Hardware solutions / Firmware
AMD Ryzen 5000 Series Mobile processor with Radeon graphics
Hardware solutions / Firmware
AMD Athlon Mobile processor with Radeon graphics
Hardware solutions / Firmware
1st Gen AMD EPYC Processors
Hardware solutions / Firmware
2nd Gen AMD EPYC Processors
Hardware solutions / Firmware

Vendor: AMD

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a mistrained branch predictions for return instructions. A local user can execute arbitrary speculative code under certain microarchitecture-dependent conditions. The vulnerability was dubbed  RETbleed.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AMD Athlon X4 processor: All versions

AMD Ryzen Threadripper PRO processor: All versions

2nd Gen AMD Ryzen Threadripper processors: All versions

3rd Gen AMD Ryzen Threadripper processors: All versions

7th Generation AMD A-Series APUs: All versions

AMD Ryzen 2000 series Desktop processor: All versions

AMD Ryzen 3000 Series Desktop processor: All versions

AMD Ryzen 4000 Series Desktop processors with Radeon graphics: All versions

AMD Ryzen 2000 Series Mobile processor: All versions

AMD Athlon 3000 Series Mobile processors with Radeon Graphics: All versions

AMD Ryzen 3000 Series Mobile processor: All versions

2nd Gen AMD Ryzen Mobile processor with Radeon graphics: All versions

AMD Ryzen 4000 Series Mobile processors with Radeon graphics: All versions

AMD Ryzen 5000 Series Mobile processor with Radeon graphics: All versions

AMD Athlon Mobile processor with Radeon graphics: All versions

1st Gen AMD EPYC Processors: All versions

2nd Gen AMD EPYC Processors: All versions

---

External links
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1037

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.