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CVE-2026-64400

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent path traversal bypass by restricting caseless retry ksmbd_vfs_path_lookup() enforces LOOKUP_BENEATH to restrict path resolution within the share root. When a crafted path attempts to escape the share boundary using parent-directory components ('..'), vfs_path_parent_lookup() detects this and immediately fails, returning -EXDEV. However, a bug exists in __ksmbd_vfs_kern_path() under caseless mode. The function f
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c4f462f55c7a1edf00de4533a054bcf8c8087a703870f82b9a18d20d48e5c914
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":"unaffected","product":"Linux","programFiles":["fs/smb/server/vfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8c9a4f1327eb71efbf14842e7b8a6d965077eb67","status":"affected","version":"74d7970febf7e9005375aeda0df821d2edffc9f7","versionType":"git"},{"lessThan":"54bab9ba5a9f156ffa9324fcbe5a356fd0242f95","status":"affected","version":"74d7970febf7e9005375aeda0df821d2edffc9f7","versionType":"git"},{"status":"affected","version":"019aae488dbc67c97a33db03652e20e2c9e3afa7","versionType":"git"},{"status":"affect…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/vfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/vfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8c9a4f1327eb71efbf14842e7b8a6d965077eb67","status":"affected","version":"74d7970febf7e9005375aeda0df821d2edffc9f7","versionType":"git"},{"lessThan":"54bab9ba5a9f156ffa9324fcbe5a356fd0242f95","status":"affected","version":"74d7970febf7e9005375aeda0df821d2edffc9f7","versionType":"git"},{"status":"affected","version":"019aae488dbc67c97a33db03652e20e2c9e3afa7","versionType":"git"},{"status":"affect…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/vfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.6,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /containers/cna/metrics/0/cvssV3_1

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/54bab9ba5a9f156ffa9324fcbe5a356fd0242f95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/8c9a4f1327eb71efbf14842e7b8a6d965077eb67"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63be4bab16a7150581f3e8171843ff3b0c522b9499fbe114d6a41a6957ddc2c0 · sha256:f85a388627c90b3b… · /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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