Review reviewHigh

CVE-2025-38715

Linux Linux, SIMATIC CN 4100, linux kernel

In the Linux kernel, the following vulnerability has been resolved: hfs: fix slab-out-of-bounds in hfs_bnode_read() This patch introduces is_bnode_offset_valid() method that checks the requested offset value. Also, it introduces check_and_correct_requested_length() method that checks and correct the requested length (if it is necessary). These methods are used in hfs_bnode_read(), hfs_bnode_write(), hfs_bnode_clear(), hfs_bnode_copy(), and hfs_bnode_move() with the goal to prevent the access out of allocated memory and triggering the crash.

CVSS
7.1
EPSS
0.17%
6.28% percentile
CISA KEV
Not listed
Published
2025.09.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: hfs: fix slab-out-of-bounds in hfs_bnode_read() This patch introduces is_bnode_offset_valid() method that checks the requested offset value. Also, it introduces check_and_correct_requested_length() method that checks and correct the requested length (if it is necessary). These methods are used in hfs_bnode_read(), hfs_bnode_write(), hfs_bnode_clear(), hfs_bnode_copy(), and hfs_bnode_move() with the goal to prevent the access out of allocated memory and triggering the crash.

Affected product and versions

Product
Linux Linux, SIMATIC CN 4100, linux kernel
Affected versions
>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e7d2dc2421e821e4045775e6dc226378328de6f6, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 67ecc81f6492275c9c54280532f558483c99c90e, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a1a60e79502279f996e55052f50cc14919020475, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fe2891a9c43ab87d1a210d61e6438ca6936e2f62, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 384a66b89f9540a9a8cb0f48807697dfabaece4c, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < efc095b35b23297e419c2ab4fc1ed1a8f0781a29, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fc7f732984ec91f30be3e574e0644066d07f2b78, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eec522fd0d28106b14a59ab2d658605febe4a3bb, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a431930c9bac518bf99d6b1da526a7f37ddee8d8, >= 2.6.12, < V5.0, >= 2.6.12.1 < 5.4.297, >= 5.5 < 5.10.241, >= 5.11 < 5.15.190, >= 5.16 < 6.1.149, >= 6.2 < 6.6.103, >= 6.7 < 6.12.43, >= 6.13 < 6.15.11, >= 6.16 < 6.16.2, 2.6.12
Fixed versions
5.4.297, 5.10.241, 5.15.190, 6.1.149, 6.6.103, 6.12.43, 6.15.11, 6.16.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC CN 4100, linux kernel 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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
CWE-125
CVE-2025-38715 — Linux Linux, SIMATIC CN 4100, linux kernel | SECUFOCUS NOW