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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2024-26973

fat: fix uninitialized field in nostale filehandlesCVE-2024-26973

Answer in brief

CVE-2024-26973 records a Unknown severity vulnerability in fat: fix uninitialized field in nostale filehandles. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. 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 1, 2024Updated 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
6 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 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <9840d1897e28f8733cc1e38f97e044f987dc0a63 || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <f52d7663a10a1266a2d3871a6dd8fd111edc549f || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <a276c595c3a629170b0f052a3724f755d7c6adc6 || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <c8cc05de8e6b5612b6e9f92c385c1a064b0db375 || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <03a7e3f2ba3ca25f1da1d3898709a08db14c1abb || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <74f852654b8b7866f15323685f1e178d3386c688 || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <cdd33d54e789d229d6d5007cbf3f53965ca1a5c6 || >=ea3983ace6b79c96e6ab3d3837e2eaf81ab881e2 <fde2497d2bc3a063d8af88b258dbadc86bd7b57c9840d1897e28f8733cc1e38f97e044f987dc0a63, f52d7663a10a1266a2d3871a6dd8fd111edc549f, a276c595c3a629170b0f052a3724f755d7c6adc6, b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee, c8cc05de8e6b5612b6e9f92c385c1a064b0db375, 03a7e3f2ba3ca25f1da1d3898709a08db14c1abb, 74f852654b8b7866f15323685f1e178d3386c688, cdd33d54e789d229d6d5007cbf3f53965ca1a5c6, fde2497d2bc3a063d8af88b258dbadc86bd7b57c
Linux/Linuxgeneric3.10Not reported
Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <V1.1.1V1.1.1
Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP.
  2. 2Review the reported fix. Update Linux/Linux to 9840d1897e28f8733cc1e38f97e044f987dc0a63; Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5; Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP to V3.1.5; Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1.1; Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    May 1, 2024

    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 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
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencelists.debian.org
  • Source referencelists.debian.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: fat: fix uninitialized field in nostale filehandles When fat_encode_fh_nostale() encodes file handle without a parent it stores only first 10 bytes of the file handle. However the length of the file handle must be a multiple of 4 so the file handle is actually 12 bytes long and the last two bytes remain uninitialized. This is not great at we potentially leak uninitialized information with the handle to userspace. Properly initialize the full handle length.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • SODOLA SL902-SWTGW124AS Buffer Overflow DoS via Multipart Boundary ParserSame generic ecosystem
  • Ellucian WebAdvisor 3.2 Unauthenticated XXE InjectionSame generic ecosystem
  • sgl-project SGLang generate Endpoint io_struct.py denial of serviceSame generic ecosystem
  • sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of serviceSame generic ecosystem
  • 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
13 linked sources
Open source record