Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-63806

In the Linux kernel, the following vulnerability has been resolved: KVM: Replace guest-triggerable BUG_ON() in ioeventfd datamatch with get_unaligned() Drop a BUG_ON() that has been reachable since it was first added, way back in 2009, and instead use get_unaligned() to perform potentially-unaligned accesses. For a given store, KVM x86's emulator tracks the entire value in the destination operand, x86_emulate_ctxt.dst. If the destination is memory, and the target splits multiple pages and/or
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:111ea738d5ee2c26ed97d4fe4a74c09992b086d2fa58d3d2e13335f2550a26e3
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":"affected","product":"Linux","programFiles":["virt/kvm/eventfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.32"},{"lessThan":"2.6.32","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessTh…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["virt/kvm/eventfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2426c15c1395b7d5ccf1e5025ca898af7f3decb6","status":"affected","version":"d34e6b175e61821026893ec5298cc8e7558df43a","versionType":"git"},{"lessThan":"4186c850789906b875a1d263377a4d37c078e317","status":"affected","version":"d34e6b175e61821026893ec5298cc8e7558df43a","versionType":"git"},{"lessThan":"36ff44fb3d89960391e013fb9d91e23dbc48be47","status":"affected","version":"d34e6b175e61821026893ec5298…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["virt/kvm/eventfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.32"},{"lessThan":"2.6.32","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessTh…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["virt/kvm/eventfd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2426c15c1395b7d5ccf1e5025ca898af7f3decb6","status":"affected","version":"d34e6b175e61821026893ec5298cc8e7558df43a","versionType":"git"},{"lessThan":"4186c850789906b875a1d263377a4d37c078e317","status":"affected","version":"d34e6b175e61821026893ec5298cc8e7558df43a","versionType":"git"},{"lessThan":"36ff44fb3d89960391e013fb9d91e23dbc48be47","status":"affected","version":"d34e6b175e61821026893ec5298…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/2426c15c1395b7d5ccf1e5025ca898af7f3decb6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/36ff44fb3d89960391e013fb9d91e23dbc48be47"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/4186c850789906b875a1d263377a4d37c078e317"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/5c87b47374682f69686068ad0a7779365a527b1c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/5da9b1a87ec7cc3489c27016313524769f12d9e0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/92fc631b69deb1c7d56aec2663003600799dcd75"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/bf89e3738480d33cd515b4a18900e8443d40cd2e"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/f1edbed787ba67988ed34e0132ca128b052b6ce8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:022618a5424e1334aeabdc2a5d5167b3be6fb3da66454248243b0e37210abf83 · sha256:f57704d3a3b93c14… · /containers/cna/references/7

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.

← Back to CVE Explorer