No exploitation reportedFix available

CVE-2021-47308

Q: Is CVE-2021-47308 actively exploited?

Active exploitation of CVE-2021-47308 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-47308?

CVE-2021-47308 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2024-05-21
Fixed in5.13.5 · 5.10.53 · 5.4.135 · 4.19.199 · 4.14.241
WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix array index out of bound exception Fix array index out of bound exception in fc_rport_prli_resp().

Timeline

dates in UTC

2024-05-2115:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-47308?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-47308?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Linux linux kernel

Branch	Affected	Fixed in	Source
5.x	≥ 5.11, < 5.13.5	5.13.5	NVD
5.x	≥ 5.5, < 5.10.53	5.10.53	NVD
5.4	≥ 4.20, < 5.4.135	5.4.135	NVD
4.x	≥ 4.15, < 4.19.199	4.19.199	NVD
4.14	< 4.14.241	4.14.241	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Linux linux kernel to 5.13.5 · 5.10.53 · 5.4.135 · 4.19.199 · 4.14.241

Advisories and patches

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2024-05-21
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.16.52024-05-23
CNACVSS 3.18.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-1252024-05-23
FIRST EPSSEPSS score1.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2024-05-21
Last Modified: 2026-08-04
NVD status: Modified

Frequently asked questions

What is CVE-2021-47308?

In the Linux kernel, the following vulnerability has been resolved: scsi: libfc: Fix array index out of bound exception Fix array index out of bound exception in fc_rport_prli_resp().

Is CVE-2021-47308 actively exploited?

Active exploitation of CVE-2021-47308 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-47308?

CVE-2021-47308 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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