Vulnerability in Amperecomputing Ampere Altra
CVE-2022-25368
Spectre BHB is a variant of Spectre-v2 in which malicious code uses the shared branch history (stored in the CPU BHB) to influence mispredicted branches in the victim's hardware context. Speculation caused by these mispredicted branches can then potentially be used to cause cache allocation, which can then be used to infer information that should be protected.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (20.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- amperecomputing.com/products/security-bulletins/impact-of-spectre-bhb-on-ampere… (Vendor Advisory)
- cve.mitre.org/cgi-bin/cvename.cgi (VDB Entry, Third Party Advisory)
- developer.arm.com/support/arm-security-updates/speculative-processor-vulnerabil… (Technical Description, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-25368?
- CVE-2022-25368 is a medium-severity vulnerability in Amperecomputing Ampere Altra. CVSS score: 4.7/10. Published 2022-03-10.
- How severe is CVE-2022-25368?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2022-25368 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.