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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2021-47002

SUNRPC: Fix null pointer dereference in svc_rqst_free()CVE-2021-47002

Answer in brief

CVE-2021-47002 records a Unknown severity vulnerability in SUNRPC: Fix null pointer dereference in svc_rqst_free(). 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 Feb 28, 2024Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 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>=79e4e0d489c8e72b9efa388e504a036eec1550c6 <3de81c1e84bf84803308da3272a829a7655c5336 || >=5191955d6fc65e6d4efe8f4f10a6028298f57281 <1e10f58f1c9a6b667b045513c7a4e6111c24fe7c || >=5191955d6fc65e6d4efe8f4f10a6028298f57281 <c664aaec9aee544538a78ba4893a44bc73a6d742 || >=5191955d6fc65e6d4efe8f4f10a6028298f57281 <b9f83ffaa0c096b4c832a43964fe6bff3acffe10 || >=5.10.220 <5.10.2213de81c1e84bf84803308da3272a829a7655c5336, 1e10f58f1c9a6b667b045513c7a4e6111c24fe7c, c664aaec9aee544538a78ba4893a44bc73a6d742, b9f83ffaa0c096b4c832a43964fe6bff3acffe10, 5.10.221
Linux/Linuxgeneric5.11Not reported
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <V1.1.1V1.1.1

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 3de81c1e84bf84803308da3272a829a7655c5336; Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Feb 28, 2024

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

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix null pointer dereference in svc_rqst_free() When alloc_pages_node() returns null in svc_rqst_alloc(), the null rq_scratch_page pointer will be dereferenced when calling put_page() in svc_rqst_free(). Fix it by adding a null check. Addresses-Coverity: ("Dereference after null check")

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • scsi: qla2xxx: Use memset_io() to clear QLAFX00 request ring slotSame linux/linux package
  • s390/crypto: Fix skcipher_walk return code handling in aes_s390Same linux/linux package
  • exec: do_close_on_exec() before taking exec_update_lockSame linux/linux package
  • drm/amdgpu: skip gfx switch_power_profile during GPU resetSame linux/linux package
  • x86/amd_node: Avoid divide by zero on virtualized systemsSame linux/linux package
  • drm/xe: Guard page-fault worker with runtime PM checkSame linux/linux package

Record context

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