CVE Explorer

CVE-2026-64395

In the Linux kernel, the following vulnerability has been resolved: ksmbd: require source read access for duplicate extents FSCTL_DUPLICATE_EXTENTS_TO_FILE passes the source file directly to vfs_clone_file_range() or vfs_copy_file_range() without checking the SMB access mask granted to the source handle. A handle opened with attribute access can consequently be used to copy file contents into an attacker-readable destination. Require FILE_READ_DATA on the source handle before either VFS opera

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9c2f8ea4636e4513fc36f3ea0594c6220265242a9d14e62c4c8f262475cb1571

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":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2d2ab6983620c2d60ce7db72133984ca3873b929","status":"affected","version":"eb817368f50c1cbe1bd07044124aad7db6330e3a","versionType":"git"},{"lessThan":"67bdad9cf01b25030e3bf00bbce6c309319d6663","status":"affected","version":"eb817368f50c1cbe1bd07044124aad7db6330e3a","versionType":"git"},{"lessThan":"b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5f","status":"affected","version":"eb817368f50c1cbe1bd070…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThan…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/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:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/metrics/0/cvssV3_1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/2d2ab6983620c2d60ce7db72133984ca3873b929"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/67bdad9cf01b25030e3bf00bbce6c309319d6663"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/a10942af27832c2761d020863a46e79bebe0567d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5f"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/cedff600f1642aa982178503552f0d007bc829c8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/db231af842868268839f9f9619c68cb27830d8be"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:34b18c5a63da575ac8f6d727b799c8d846e83cd8beae002fd2f42f2a4fbd5ba8 · sha256:ba6cf451f8ed485f… · /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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