02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: canonicalLinux kernel KVM Power8 conflicting use of HSTATE_HOST_R1
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.35% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 27.7% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.1
- Published
- 2020-04-09 22:10Z6 YR AGO
- Last updated
- 2024-09-16 22:03Z1 YR AGO
- Reserved
- 2020-02-10
- Assigning CNA
- canonical
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-368Context Switching Race ConditionBase
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
- CWE-121Stack-based Buffer OverflowVariant
- Data version
- 5.1
- Document digest
- 3a804b4a4132428f19f41af5b1aa349285aa207b6b9ddc017839db0b30e51785
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
Linux kernelLinux kernel4.8 to < unspecified, < 4.18PPC Power8 SRC: CNA
Apply the following three Linux kernel commits, though possibly only the first commit is strictly necessary:
6f597c6b63b6 ("KVM: PPC: Book3S PR: Add guest MSR parameter for kvmppc_save_tm()/kvmppc_restore_tm()")
7b0e827c6970 ("KVM: PPC: Book3S HV: Factor fake-suspend handling out of kvmppc_save/restore_tm")
009c872a8bc4 ("KVM: PPC: Book3S PR: Move kvmppc_save_tm/kvmppc_restore_tm to separate file")