High [CVE-2026-53360] Require in-GHCB scratch area if GHCB v2+ is in use
This high-severity Red Hat Linux advisory covers CVE-2026-53360.
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
Require in-GHCB scratch area if GHCB v2+ is in use. Red Hat rates this important (CVSS 7).
Weakness: CWE-787.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Mitigation checklist
- If confidential VMs are not in use, this vulnerability can be mitigated by disabling SEV-SNP support on the host, removing the attack surface entirely. Create a file in `/etc/modprobe.d/` with a descriptive name, such as `cve-2026-53360-mitigation.conf`. In that file, disable SEV-SNP for the `kvm_amd` kernel module: ``` options kvm_amd sev_snp=0 ``` To validate, read the file `/sys/module/kvm_amd/parameters/sev_snp`. This file should read `N` to indicate that the feature is disabled. If SEV-SNP cannot be disabled, run SEV-SNP hosts on isolated environments and restrict the ability to create SNP-enabled VMs to trusted tenants/administrators only.
Official advisory · high-confidence parse· fetched 1 month ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.