CVE Explorer

CVE-2026-64293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Use sizeof(*hdr) instead of sizeof(hdr) in veventq read The bound-check in iommufd_veventq_fops_read() for the normal vEVENT path uses sizeof(hdr) where the surrounding code uses sizeof(*hdr): if (!vevent_for_lost_events_header(cur) && sizeof(hdr) + cur->data_len > count - done) { hdr is declared as struct iommufd_vevent_header *, so sizeof(hdr) evaluates to the size of the pointer. Surrounding code uses size

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:44751dad3cd5f25c76c175eaef446a026300ef5a030793082df0958bb4f50d65

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/iommufd/eventq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"04a177f91160ee18da98f5689482cf0f589ec869","status":"affected","version":"e36ba5ab808ef6237c3148d469c8238674230e2b","versionType":"git"},{"lessThan":"0cdbb97a4dbd69abdd2ab998b4fbc7803d4b0b72","status":"affected","version":"e36ba5ab808ef6237c3148d469c8238674230e2b","versionType":"git"},{"lessThan":"be93d186ae88a92e7aa77e122d4e661fa57b1e39","status":"affected","version":"e36ba5ab808ef62…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/iommufd/eventq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_fo…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions

{"url":"https://git.kernel.org/stable/c/04a177f91160ee18da98f5689482cf0f589ec869"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/0cdbb97a4dbd69abdd2ab998b4fbc7803d4b0b72"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/be93d186ae88a92e7aa77e122d4e661fa57b1e39"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:cd75b3eb19d5522d979e5d96a86b09af0ffaff3ca46c6c6aa0fac1494fae1dcb · sha256:1c6b17b6a62f0d19… · /containers/cna/references/2

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