by Kastro
Paper/Archive/CVE-2025-68817

CVE-2025-68817

Linux Linux — ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 38.9.389 × 207.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linuxdd45db4d9bbc8f122a9b4db5ce94ae29fcf03d3c – < 446beed646b2e426dd53d27358365f8678e1dd01446beed646b2e426dd53d27358365f8678e1dd01CNA
Linux7b58ee8d0b91359554cf219cd4f33872ea2afd66 – < d092de8a26c952379ded8e6b0bda31d89befac1ad092de8a26c952379ded8e6b0bda31d89befac1aCNA
Linux33b235a6e6ebe0f05f3586a71e8d281d00f71e2e – < d64977495e44855f2b28d8ce56107c963a7a50e4d64977495e44855f2b28d8ce56107c963a7a50e4CNA
Linux33b235a6e6ebe0f05f3586a71e8d281d00f71e2e – < 21a3d01fc6db5129f81edb0ab7cb94fd758bcbea21a3d01fc6db5129f81edb0ab7cb94fd758bcbeaCNA
Linux33b235a6e6ebe0f05f3586a71e8d281d00f71e2e – < 063cbbc6f595ea36ad146e1b7d2af820894beb21063cbbc6f595ea36ad146e1b7d2af820894beb21CNA
Linux33b235a6e6ebe0f05f3586a71e8d281d00f71e2e – < b39a1833cc4a2755b02603eec3a71a85e9dff926b39a1833cc4a2755b02603eec3a71a85e9dff926CNA
Linux5.15.145 – < 5.15.1995.15.199CNA
Linux6.1.71 – < 6.1.1606.1.160CNA
Linux6.66.1.160CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgit.kernel.org/stable/c/446beed646b2e426dd53d27358365f8678e1dd01refgit.kernel.org/stable/c/d092de8a26c952379ded8e6b0bda31d89befac1arefgit.kernel.org/stable/c/d64977495e44855f2b28d8ce56107c963a7a50e4refgit.kernel.org/stable/c/21a3d01fc6db5129f81edb0ab7cb94fd758bcbearefgit.kernel.org/stable/c/063cbbc6f595ea36ad146e1b7d2af820894beb21refgit.kernel.org/stable/c/b39a1833cc4a2755b02603eec3a71a85e9dff926