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  4. CVE 2022 3521 linux kernel kcm kcmsockc kcmtxwork race condition
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Back to active CVEs
Low · CVSS 2.6CVE-2022-3521

Linux Kernel kcm kcmsock.c kcm_tx_work race conditionCVE-2022-3521

Answer in brief

CVE-2022-3521 records a Low severity (CVSS 2.6) vulnerability in Linux Kernel kcm kcmsock.c kcm_tx_work race condition. The current sources do not mark it as known exploited. The current feed maps Linux/Kernel (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 Oct 16, 2022Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 2.6
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 2.6. 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/Kernel (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/Kernelgenericn/aNot reported
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <V1.1V1.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Kernel, Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem.
  2. 2Review the reported fix. Update Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 16, 2022

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

  2. Source modified

    Oct 14, 2026

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

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

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

A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function kcm_tx_work of the file net/kcm/kcmsock.c of the component kcm. The manipulation leads to race condition. It is recommended to apply a patch to fix this issue. VDB-211018 is the identifier assigned to this vulnerability.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • NGINX ngx_http_js_module vulnerabilitySame generic ecosystem
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  • NGINX Ingress Controller vulnerabilitySame generic ecosystem
  • @offactory/compress-fonts before 1.1.1 OS Command Injection via Font File NamesSame generic ecosystem
  • Stills before 25.24.2 OS Command Injection via Media File NamesSame generic ecosystem
  • Thumbnail through 1.5 OS Command Injection via generate_thumbnail File PathsSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-362
Source
CVE List V5
Source checked
Oct 14, 2026
References
5 linked sources
Open source record