Vulnerability identifier: #VU78572
Vulnerability risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-416
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
AMD Ryzen 3000 Series Desktop processor
Hardware solutions /
Firmware
3rd Gen AMD Ryzen Threadripper processors
Hardware solutions /
Firmware
AMD Ryzen 4000 Series Desktop processors with Radeon graphics
Hardware solutions /
Firmware
AMD Ryzen 5000 Series Mobile processor with Radeon graphics
Hardware solutions /
Firmware
AMD Ryzen 4000 Series Mobile processors with Radeon graphics
Hardware solutions /
Firmware
AMD Ryzen 7020 Series Processor
Mobile applications /
Mobile firmware & hardware
AMD Generic Encapsulated Software Architecture
Operating systems & Components /
Operating system package or component
Vendor: AMD
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in AMD Zen2 processors. A local user can trigger a use-after-free error and execute arbitrary code on the system.
Note, the vulnerability was dubbed Zenbleed.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
AMD Ryzen 3000 Series Desktop processor: All versions
3rd Gen AMD Ryzen Threadripper processors: All versions
AMD Ryzen 4000 Series Desktop processors with Radeon graphics: All versions
AMD Ryzen 5000 Series Mobile processor with Radeon graphics: All versions
AMD Ryzen 4000 Series Mobile processors with Radeon graphics: All versions
AMD Ryzen 7020 Series Processor: All versions
External links
http://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=b250b32ab1d044953af2dc5e790819a7703b7ee6
http://lock.cmpxchg8b.com/zenbleed.html
http://www.amd.com/en/resources/product-security/bulletin/amd-sb-7008.html
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.