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CVE-2026-53360

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use As per the GHCB spec, when using GHCB v2+ require the software scratch area to reside in the GHCB's shared buffer. Note, things like Page State Change (PSC) requests _rely_ on this behavior, as the guest can't provide a length when making the request, i.e. the size of the guest payload is bounded by the size of the shared buffer. Failure to force usage of the GHCB,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:61decd86be578e6a5188c39f74cc46480c5eea49eea7aaa5061225768152e7e8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bf9ba093fbb83c0c9a3dedd50efec29424eca2fc","status":"affected","version":"4af663c2f64a8d252e690c60cf8b8abf22dc2951","versionType":"git"},{"lessThan":"c9b4198fbc6ed99a9da4bee9f74bb730f926c9ae","status":"affected","version":"4af663c2f64a8d252e690c60cf8b8abf22dc2951","versionType":"git"},{"lessThan":"b328ede59ac34e7998e1eee5e5f0cc26c2a91846","status":"affected","version":"4af663c2f64a8d252e690c6…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanO…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bf9ba093fbb83c0c9a3dedd50efec29424eca2fc","status":"affected","version":"4af663c2f64a8d252e690c60cf8b8abf22dc2951","versionType":"git"},{"lessThan":"c9b4198fbc6ed99a9da4bee9f74bb730f926c9ae","status":"affected","version":"4af663c2f64a8d252e690c60cf8b8abf22dc2951","versionType":"git"},{"lessThan":"b328ede59ac34e7998e1eee5e5f0cc26c2a91846","status":"affected","version":"4af663c2f64a8d252e690c6…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["arch/x86/kvm/svm/sev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanO…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/b328ede59ac34e7998e1eee5e5f0cc26c2a91846"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/bf9ba093fbb83c0c9a3dedd50efec29424eca2fc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/c9b4198fbc6ed99a9da4bee9f74bb730f926c9ae"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/db3f2195d29344a3cf1e9dd9ab7f21ced7308cf7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2bf88cef1bb319136e593203405482dd7e40bb9a73fe6115f44378deeb944a9b · sha256:e003b67ce5ef3b74… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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