In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOAD_CANCEL path (clp != NULL), manage_cpntf_state() freed the target cpntf state without checking ownership. The lookup key st->si_opaque.so_id is allocated cyclically (guessable) and the embedded clientid is the fixed per-net nn->s2s_cp_cl_id, so any authenticated NFSv4.2 client could cancel and free another client's copy-notify stateid. Compare the creating clientid recorded in state->cp_p_clid against the requesting client's cl_clientid and return nfserr_bad_stateid on a mismatch instead of freeing the entry.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 2
- StatusReceived → PublishedNVD modified 2026-10-19 08:51
- First seenunscoredNVD modified 2026-10-19 09:18
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://git.kernel.org/stable/c/6bba72b8ee68ad631b94bd439592cba46de54d7d
- https://git.kernel.org/stable/c/6bdbfab96e0cf25e5f57dac5c09dc1749751a4bf
- https://git.kernel.org/stable/c/75268f6cfe26b09a7e4d3216367e87fe9e2a26aa
- https://git.kernel.org/stable/c/81b2cfe767943922eca906a2a5af23a0ce5d0f35
- https://git.kernel.org/stable/c/88daaed26e17e1c7e851859b5bbb4f0e1ab6d0e9
- https://git.kernel.org/stable/c/b1eca07303594ca27f5dc360a6946bd7e1f5b04c
- https://git.kernel.org/stable/c/b42dc26a14b4ad5d6daaada11ec4c70744141c25
- https://git.kernel.org/stable/c/d801906165cb5cc250d5cbe44935594e170be3e2