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CVE record · CVE-2026-99258

x86/hyperv: Avoid using per-cpu output page in hv_apicid_to_vp_index()

No CVSS scoreEPSS 0.0019 · 8th percentile

Published by the CVE Program (CNA: Linux) at 3 Nov 2026, 11:25 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Linux Linux
  • affected 3d12349ade541eefde0e71bf5c4aa7aa04c52a79 to before bdba5f1b8bd0d18b1df61f769b559ed272902489 git
  • affected 86c48271e0d60c82665e9fd61277002391efcef7 to before 2b561786c9076a892ef8b8f416c9828bc87ed44f git
  • affected 86c48271e0d60c82665e9fd61277002391efcef7 to before bc8ca0f4769627ae7d04e7ffdbd20de4f27a9bf9 git
  • affected 86c48271e0d60c82665e9fd61277002391efcef7 to before 7b74c117e2aac78e0f723e1c9c3644451c56b0d9 git
  • affected cb002d6c8f06d6061e84b2109cb84416107a9fb9 git
  • affected 6.12.41 to before 6.12.115 semver
  • affected 6.15.3 to before 6.16 semver
Other versions: unaffected
Linux Linux
  • affected 6.16
  • unaffected before 6.16 semver
  • unaffected 6.12.115 to 6.12.*, inclusive semver
  • unaffected 6.18.59 to 6.18.*, inclusive semver
  • unaffected 7.2.13 to 7.2.*, inclusive semver
  • unaffected 7.3 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-99258
CNA
Linux
Tags
Published
3 Nov 2026
Updated
3 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

No source has published a CVSS score for this record yet.

  • CISA KEV Not listed.
  • EPSS 0.0019, the 8th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 3 Nov 2026, 11:25 UTC Confirmed by the CVE List
  2. 3 Nov 2026, 11:27 UTC First seen by agentprime
  3. 3 Nov 2026, 12:17 UTC Confirmed by NVD

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.