CVE-2026-64016

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix durable reconnect error path file lifetime After a durable reconnect succeeds, ksmbd_reopen_durable_fd() republishes the same ksmbd_file into the session volatile-id table. If smb2_open() then takes a later error path, cleanup first calls ksmbd_fd_put(work, fp) and then unconditionally calls ksmbd_put_durable_fd(dh_info.fp). In this case fp and dh_info.fp are the same object. The first put drops the reconnect lookup reference, but the final durable put can run __ksmbd_close_fd(NULL, fp). Because the final close is not session-aware, it can free the file object without removing the volatile-id entry that was just published into the session table. Use the session-aware put for the final reconnect drop when the reconnect had already succeeded and the error path is cleaning up the republished file. Earlier reconnect failures, before fp is assigned to dh_info.fp, keep using the durable-only put path.

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Produits concernés

• Linux
• Linux linux kernel

Scores CVSS

Faiblesses (CWE)

• CWE-416

Références

• https://git.kernel.org/stable/c/3515503322f4819277091839eed46b695096aca5 Patch
• https://git.kernel.org/stable/c/478bfaa036bd0c7e179acff8b8484bccdee3b8c7 Patch
• https://git.kernel.org/stable/c/5e641e4ee0bc1937408d41051a908ad4151be63b Patch
• https://git.kernel.org/stable/c/6cb0b9385320110fe24a5d5ac0000ade4bb3a3f3 Patch
• https://git.kernel.org/stable/c/a1a39f227c80cbf369767badc32cba2b225147d1 Patch

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories