CVE Explorer

CVE-2026-64397

In the Linux kernel, the following vulnerability has been resolved: ksmbd: serialize QUERY_DIRECTORY requests per file smb2_query_dir() stores a pointer to its stack-allocated private data in the ksmbd_file readdir_data. Concurrent QUERY_DIRECTORY requests using the same file handle can overwrite this pointer while an iterate_dir() callback is still using it, resulting in a stack use-after-free. Add a per-file mutex and hold it while accessing the shared directory enumeration state. The lock

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:32b591afea9aedd989d67de4ee5ce93c2b7f6849071e638dafb1e912cf5b79c3

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","fs/smb/server/vfs_cache.c","fs/smb/server/vfs_cache.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1426fd79102539bc0ab5c8fced047ad4313b9908","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"2a64dbf9c739ddf7a25a066507597bf89f8f73d2","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"64dac2d486ec1eb18dc00968b16a230b6b75ec2…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/smb2pdu.c","fs/smb/server/vfs_cache.c","fs/smb/server/vfs_cache.h"],"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…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/metrics/0/cvssV3_1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/1426fd79102539bc0ab5c8fced047ad4313b9908"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/2a64dbf9c739ddf7a25a066507597bf89f8f73d2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/64dac2d486ec1eb18dc00968b16a230b6b75ec24"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/a1d5d31cad593ea5e1b637f2f39c9ef6d09d1199"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/be6d26bf27499977c746abc163659915082348d8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/fd22b039a5a05bc1d6818e9dcd1001fb432a829d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f61dc9c9e522d93d2df619659e73189f0c808c9bfcb4e61a48461d0841f06b23 · sha256:4782f7a418bbd6bc… · /containers/cna/references/4

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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