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Review reviewHigh

CVE-2025-68349

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

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.

CVSS
7.5
EPSS
0.60%
45.4% percentile
CISA KEV
Not listed
Published
2025.12.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.60%
Technical severityCVSS 7.5

Vulnerability overview

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 product and versions

Product
Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Affected versions
>= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < 084bebe82ad86f718a3af84f34761863e63164ed, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < b6e4e3a08c03200cc4b8067ec8ab3172a989d6fc, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < 104080582ae0aa6dce6c6d75ff89062efe84673b, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < f718f9ea6094843b8c059b073af49ad61e9f49bb, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < 59947dff0fb7c19c09ce6dccbcd253fd542b6c25, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < ca2e7fdad7c683b64821c94a58b9b68733214dad, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < 38694f9aae00459ab443a7dc8b3949a6b33b560a, >= fe1cf9469d7bcb6af27e42eb555a41b0135bce4a < e0f8058f2cb56de0b7572f51cd563ca5debce746, >= 4.10, >= V3.1.6
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Not available
CVE-2025-68349 — Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | SECUFOCUS NOW