CVE-2025-68817 (GCVE-0-2025-68817)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-02-09 08:34
VLAI?
Title
ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency Under high concurrency, A tree-connection object (tcon) is freed on a disconnect path while another path still holds a reference and later executes *_put()/write on it.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: dd45db4d9bbc8f122a9b4db5ce94ae29fcf03d3c , < 446beed646b2e426dd53d27358365f8678e1dd01 (git)
Affected: 7b58ee8d0b91359554cf219cd4f33872ea2afd66 , < d092de8a26c952379ded8e6b0bda31d89befac1a (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < d64977495e44855f2b28d8ce56107c963a7a50e4 (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < 21a3d01fc6db5129f81edb0ab7cb94fd758bcbea (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < 063cbbc6f595ea36ad146e1b7d2af820894beb21 (git)
Affected: 33b235a6e6ebe0f05f3586a71e8d281d00f71e2e , < b39a1833cc4a2755b02603eec3a71a85e9dff926 (git)
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    Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "fs/smb/server/mgmt/tree_connect.c",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency\n\nUnder high concurrency, A tree-connection object (tcon) is freed on\na disconnect path while another path still holds a reference and later\nexecutes *_put()/write on it."
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        "dateUpdated": "2026-02-09T08:34:07.177Z",
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        "shortName": "Linux"
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    "datePublished": "2026-01-13T15:29:21.210Z",
    "dateReserved": "2025-12-24T10:30:51.048Z",
    "dateUpdated": "2026-02-09T08:34:07.177Z",
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.