Linux Kernel: NFSD Layout Revocation Causes Infinite Loop
CVE-2026-64519 Published on July 25, 2026
NFSD: Fix infinite loop in layout state revocation
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Fix infinite loop in layout state revocation
find_one_sb_stid() skips stids whose sc_status is non-zero, but the
SC_TYPE_LAYOUT case in nfsd4_revoke_states() never sets sc_status
before calling nfsd4_close_layout(). The retry loop therefore finds
the same layout stid on every iteration, hanging the revoker
indefinitely.
Products Associated with CVE-2026-64519
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Affected Versions
Linux:- Version 1e33e1414bec54a4feafa9e67e2617031be0afe2 and below d1fc00ec02e9deb3f8d2bd59caf938c554fbc576 is affected.
- Version 1e33e1414bec54a4feafa9e67e2617031be0afe2 and below fe59ae27d7346245f5d8d97220f374e63efd28b5 is affected.
- Version 1e33e1414bec54a4feafa9e67e2617031be0afe2 and below 44e5e4eb3a07bf3e1d931dd9f96f3edcfa376605 is affected.
- Version 1e33e1414bec54a4feafa9e67e2617031be0afe2 and below 4f8ef58c10bfe5f86a643c7c8331b37e69e3dae1 is affected.
- Version 6.9 is affected.
- Before 6.9 is unaffected.
- Version 6.12.92, <= 6.12.* is unaffected.
- Version 6.18.34, <= 6.18.* is unaffected.
- Version 7.0.11, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.