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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2024-26878

quota: Fix potential NULL pointer dereferenceCVE-2024-26878

Answer in brief

CVE-2024-26878 records a Unknown severity vulnerability in quota: Fix potential NULL pointer dereference. 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 Apr 17, 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>=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <8514899c1a4edf802f03c408db901063aa3f05a1 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <49669f8e7eb053f91d239df7b1bfb4500255a9d0 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <61380537aa6dd32d8a723d98b8f1bd1b11d8fee0 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <7f9e833fc0f9b47be503af012eb5903086939754 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <f2649d98aa9ca8623149b3cb8df00c944f5655c7 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <6afc9f4434fa8063aa768c2bf5bf98583aee0877 || >=7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac <d0aa72604fbd80c8aabb46eda00535ed35570f1f8514899c1a4edf802f03c408db901063aa3f05a1, 49669f8e7eb053f91d239df7b1bfb4500255a9d0, 61380537aa6dd32d8a723d98b8f1bd1b11d8fee0, 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25, 7f9e833fc0f9b47be503af012eb5903086939754, 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5, f2649d98aa9ca8623149b3cb8df00c944f5655c7, 6afc9f4434fa8063aa768c2bf5bf98583aee0877, d0aa72604fbd80c8aabb46eda00535ed35570f1f
Linux/Linuxgeneric4.14Not 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 8514899c1a4edf802f03c408db901063aa3f05a1; 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

    Apr 17, 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: quota: Fix potential NULL pointer dereference Below race may cause NULL pointer dereference P1 P2 dquot_free_inode quota_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[type] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... If dquot_free_inode(or other routines) checks inode's quota pointers (1) before quota_off sets it to NULL(2) and use it (3) after that, NULL pointer dereference will be triggered. So let's fix it by using a temporary pointer to avoid this issue.

Quoted source text, attributed separately from HOL analysis.

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  • 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