octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context() (CVE-2021-47148) | HOL Guard CVE

High · CVSS 7.8CVE-2021-47148

octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()

Answer in brief

CVE-2021-47148 records a High severity (CVSS 7.8) vulnerability in octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (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 Mar 25, 2024Updated Aug 4, 2026Source checked Aug 4, 2026First seen by HOL Aug 4, 2026Material review Aug 4, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 6 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. 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). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.13:rc1::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.13:rc2::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.13:rc3::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=81a4362016e7d8b17031fe1aa43cdb58a7f0f163 <389146bc6d2bbb20714d06624b74856320ce40f7 \|\| >=81a4362016e7d8b17031fe1aa43cdb58a7f0f163 <e5cc361e21648b75f935f9571d4003aaee480214	389146bc6d2bbb20714d06624b74856320ce40f7, e5cc361e21648b75f935f9571d4003aaee480214
Linux/Linuxgeneric	5.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 389146bc6d2bbb20714d06624b74856320ce40f7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 25, 2024
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 4, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context() This function is called from ethtool_set_rxfh() and "*rss_context" comes from the user. Add some bounds checking to prevent memory corruption.

Quoted source text, attributed separately from HOL analysis.

Back to active CVEs

High · CVSS 7.8CVE-2021-47148

octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()

Answer in brief

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 25, 2024Updated Aug 4, 2026Source checked Aug 4, 2026First seen by HOL Aug 4, 2026Material review Aug 4, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 6 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. 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). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.13:rc1::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.13:rc2::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:5.13:rc3::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=81a4362016e7d8b17031fe1aa43cdb58a7f0f163 <389146bc6d2bbb20714d06624b74856320ce40f7 \|\| >=81a4362016e7d8b17031fe1aa43cdb58a7f0f163 <e5cc361e21648b75f935f9571d4003aaee480214	389146bc6d2bbb20714d06624b74856320ce40f7, e5cc361e21648b75f935f9571d4003aaee480214
Linux/Linuxgeneric	5.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 389146bc6d2bbb20714d06624b74856320ce40f7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Mar 25, 2024
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 4, 2026

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.

octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs

octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs