CVE Explorer

CVE-2026-6386

In order to apply a particular protection key to an address range, the kernel must update the corresponding page table entries. The subroutine which handled this failed to take into account the presence of 1GB largepage mappings created using the shm_create_largepage(3) interface. In particular, it would always treat a page directory page entry as pointing to another page table page. The bug can be abused by an unprivileged user to cause pmap_pkru_update_range() to treat userspace memory as a

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:378d3c2f69577295f194924313e652f4c873ba9908eb3941826fa82cd9fc0e77

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-732","description":"CWE-732 Incorrect Permission Assignment for Critical Resource","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion

{"defaultStatus":"unknown","modules":["amd64"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p6","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p2","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p11","status":"affected","version":"14.3-RELEASE","versionType":"release"},{"lessThan":"p12","status":"affected","version":"13.5-RELEASE","versionType":"release"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":6.2,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-732","description":"CWE-732 Incorrect Permission Assignment for Critical Resource","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/cna/problemTypes/0/descriptions/1

Source references

1 source assertion

{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:11.amd64.asc"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:9ec5888a7e0bbca9e53956f9d68ca64a5ab39a2855b9e326a1c461680dffd062 · sha256:817575520f1422ca… · /containers/cna/references/0

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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