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Review reviewHigh

CVE-2025-21735

Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel

In the Linux kernel, the following vulnerability has been resolved: NFC: nci: Add bounds checking in nci_hci_create_pipe() The "pipe" variable is a u8 which comes from the network. If it's more than 127, then it results in memory corruption in the caller, nci_hci_connect_gate().

CVSS
7.8
EPSS
0.34%
26.2% percentile
CISA KEV
Not listed
Published
2025.02.27
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.34%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: NFC: nci: Add bounds checking in nci_hci_create_pipe() The "pipe" variable is a u8 which comes from the network. If it's more than 127, then it results in memory corruption in the caller, nci_hci_connect_gate().

Affected product and versions

Product
Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, linux kernel
Affected versions
>= a1b0b9415817c14d207921582f269d03f848b69f < bd249109d266f1d52548c46634a15b71656e0d44, >= a1b0b9415817c14d207921582f269d03f848b69f < 674e17c5933779a8bf5c15d596fdfcb5ccdebbc2, >= a1b0b9415817c14d207921582f269d03f848b69f < 10b3f947b609713e04022101f492d288a014ddfa, >= a1b0b9415817c14d207921582f269d03f848b69f < d5a461c315e5ff92657f84d8ba50caa5abf5c22a, >= a1b0b9415817c14d207921582f269d03f848b69f < 172cdfc3a5ea20289c58fb73dadc6fd4a8784a4e, >= a1b0b9415817c14d207921582f269d03f848b69f < 2ae4bade5a64d126bd18eb66bd419005c5550218, >= a1b0b9415817c14d207921582f269d03f848b69f < 59c7ed20217c0939862fbf8145bc49d5b3a13f4f, >= a1b0b9415817c14d207921582f269d03f848b69f < 110b43ef05342d5a11284cc8b21582b698b4ef1c, >= 4.4, >= 4.4 < 6.1.129, >= 6.2 < 6.6.78, >= 6.7 < 6.12.14, >= 6.13 < 6.13.3
Fixed versions
6.1.129, 6.6.78, 6.12.14, 6.13.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, 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:H/A:H
CWE
CWE-787