CVE-2021-29647

lowpriority · track · 22EPSS 0.004 · 29 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.37% (29th) EPSS
CVSS 2.1 · low
Is it mine?
31 products
Check your exposure
Who says so?
7 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-22

An issue was discovered in the Linux kernel before 5.11.11. qrtr_recvmsg in net/qrtr/qrtr.c allows attackers to obtain sensitive information from kernel memory because of a partially uninitialized data structure, aka CID-50535249f624.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedSIMATIC RF160B (6GT2003-0FA00)siemens_psirt

    Update to V2.2 or later version

  • MitigationSIMATIC RF160B (6GT2003-0FA00)cisa_csaf_ot

    Siemens has released a new version (V2.2) for SIMATIC RF160B and recommends to update to the latest version.

02

cvss

Technical severity, 0–10. One row per scoring source.

5.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.5

v2.02.1lowAV:L/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.8 · impact 3.6
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · CISA US
v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-909USprimaryCWE-200USCWE-665USCWE-909USCWE-909USCWE-909US
04

affected products (31)

Products and version ranges known to be affected.

showing 20 of 31
05

advisories (4)

Vendor and ecosystem advisories describing this.

  • SSA-770721SSA-770721: Multiple Vulnerabilities in SIMATIC RF160B before V2.22024-03-12csaf · siemens_psirtDE

    SIMATIC RF160B contain multiple vulnerabilities of different types that could allow an attacker to execute arbitrary code within the context of a privileged process. Siemens has released a new version for SIMATIC RF160B and recommends to update to the latest version.

  • WID-SEC-W-2022-1415Linux Kernel: Mehrere SchwachstellenDeutsch2021-03-30csaf · cert_bundDE

    Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen und um einen Denial of Service Zustand auszulösen.

  • ICSA-24-074-07Siemens SIMATIC2024-03-14icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code within the context of a privileged process.

  • ASB-A-1846220992021-10-01vendor · osvUS

    In qrtr_recvmsg of qrtr.c, there is a possible leak of kernel memory due to uninitialized data. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundcisa_csaf_otsiemens_psirtNVDCVE.orgMITRE
published 2021-03-30modified 2026-06-17
09

references (40)

External citations — patches, advisories, analysis.

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