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CVE-2026-90104

9.8 critical Published
NVD · CVE.org

In the Linux kernel, the following vulnerability has been resolved: NFSv4.1: zero referring call lists before decoding decode_cb_sequence_args() allocates csa_rclists with kmalloc_objs(), so each referring_call_list starts uninitialized. decode_rc_list() assigns rcl_refcalls only when rcl_nrefcalls is nonzero. A valid list with zero referring calls therefore leaves the pointer uninitialized, and nfs4_callback_sequence() later passes stale slab contents to kfree(). Allocate csa_rclists with kzalloc_objs() so every rcl_refcalls member is NULL from the beginning, including valid empty referring call lists.

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 5

  1. StatusReceived → PublishedNVD modified 2026-10-21 12:49
  2. References+2 references (now 5)NVD modified 2026-10-21 13:20
  3. StatusPublished → ReceivedNVD modified 2026-10-21 13:20
  4. StatusReceived → PublishedNVD modified 2026-10-19 08:58
  5. First seenCVSS 9.8NVD modified 2026-10-15 11:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 5