What’s Vulnerable › Vulnerabilities

CVE-2025-68349: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-24 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid Fixes a crash when layout is null during this call stack: write_inode -> nfs4_write_inode -> pnfs_layoutcommit_inode pnfs_set_layoutcommit relies on the lseg refcount to keep the layout around. Need to clear NFS_INO_LAYOUTCOMMIT otherwise we might attempt to reference a null layout.

Affected products

• Linux kernel: 4.10 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/084bebe82ad86f718a3af84f34761863e63164ed
• https://git.kernel.org/stable/c/104080582ae0aa6dce6c6d75ff89062efe84673b
• https://git.kernel.org/stable/c/38694f9aae00459ab443a7dc8b3949a6b33b560a
• https://git.kernel.org/stable/c/59947dff0fb7c19c09ce6dccbcd253fd542b6c25
• https://git.kernel.org/stable/c/b6e4e3a08c03200cc4b8067ec8ab3172a989d6fc
• https://git.kernel.org/stable/c/ca2e7fdad7c683b64821c94a58b9b68733214dad
• https://git.kernel.org/stable/c/e0f8058f2cb56de0b7572f51cd563ca5debce746
• https://git.kernel.org/stable/c/f718f9ea6094843b8c059b073af49ad61e9f49bb
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-457936.html

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