Vulnerability in Ibm Power8
CVE-2020-8834
KVM in the Linux kernel on Power8 processors has a conflicting use of HSTATE_HOST_R1 to store r1 state in kvmppc_hv_entry plus in kvmppc_{save,restore}_tm, leading to a stack corruption. Because of this, an attacker with the ability run co…
EPSS: 0.003 (26.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Ibm Power8
- Linux Linux_kernel
- Linux Kernel — versions 4.8, unspecified
- Canonical Ubuntu_linux — versions 16.04, 18.04
- Opensuse Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (Mailing List, Third Party Advisory, x_refsource_MISC)
- security@ubuntu.com (Third Party Advisory, x_refsource_MISC)
- security@ubuntu.com (Exploit, Third Party Advisory, x_refsource_MISC)
- security@ubuntu.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@ubuntu.com (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
Frequently asked questions
- What is CVE-2020-8834?
- CVE-2020-8834 is a medium-severity vulnerability in Ibm Power8, classified under CWE-368. CVSS score: 6.5/10. Published 2020-04-09.
- How severe is CVE-2020-8834?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-8834 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.