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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-46168

mptcp: fix scheduling with atomic in timestamp sockoptCVE-2026-46168

Answer in brief

CVE-2026-46168 records a Unknown severity vulnerability in mptcp: fix scheduling with atomic in timestamp sockopt. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 28, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <0949d8bbbedbafe0136a1723c41eb823c2f1e09d || >=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <e792cfb6aeaf65612cdf8e3ac431d65e66283654 || >=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <ebeb70e29e37cfce899309cc2665a3bfe960ed94 || >=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <b157dab93a7af44a84e78cf0cb311dde475cff5b || >=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <8a005fe451c73fd2b3d1faa5643c11e6bd07acfc || >=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <7eb513b42721bee4b96da69f6188d5a7783f210d || >=9061f24bf82ec2e92dd1e7c10b98b680db023d31 <b5c52908d52c6c8eb8933264aa6087a0600fd8920949d8bbbedbafe0136a1723c41eb823c2f1e09d, e792cfb6aeaf65612cdf8e3ac431d65e66283654, ebeb70e29e37cfce899309cc2665a3bfe960ed94, b157dab93a7af44a84e78cf0cb311dde475cff5b, 8a005fe451c73fd2b3d1faa5643c11e6bd07acfc, 7eb513b42721bee4b96da69f6188d5a7783f210d, b5c52908d52c6c8eb8933264aa6087a0600fd892
Linux/Linuxgeneric5.14Not reported
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <**

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem.
  2. 2Review the reported fix. Update Linux/Linux to 0949d8bbbedbafe0136a1723c41eb823c2f1e09d; Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to * if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • Source referencecert-portal.siemens.com
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic context) around sock_set_timestamp() and sock_set_timestamping() is unsafe, as both helpers can sleep. Replace lock_sock_fast() with sleepable lock_sock()/release_sock() to avoid scheduling while atomic panic.

Quoted source text, attributed separately from HOL analysis.

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  • ggml-org whisper.cpp Model Loader whisper_model_load out-of-boundsSame generic ecosystem
  • FreeRDP shadow before 3.32.0 Pre-Authentication Input Injection via Confirm Active bypassSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 15, 2026
References
8 linked sources
Open source record