Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — scsi: lpfc: Fix link down processing to address NULL pointer dereference
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0033 26.2 —
AFFECTED
Product Versions Fixed
Linux 70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf – —
Linux 2.6.38 – 5.10.241
TIMELINE
Mar 25 Reserved by Linux
Apr 10 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2021-47183 (Linux). CVSS 8.8 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix link down processing to address NULL pointer dereference
If an FC link down transition while PLOGIs are outstanding to fabric well
known addresses, outstanding ABTS requests may result in a NULL pointer
dereference. Driver unload requests may hang with repeated "2878" log
messages.
The Link down processing results in ABTS requests for outstanding ELS
requests. The Abort WQEs are sent for the ELSs before the driver had set
the link state to down. Thus the driver is sending the Abort with the
expectation that an ABTS will be sent on the wire. The Abort request is
stalled waiting for the link to come up. In some conditions the driver may
auto-complete the ELSs thus if the link does come up, the Abort completions
may reference an invalid structure.
Fix by ensuring that Abort set the flag to avoid link traffic if issued due
to conditions where the link failed.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| March 25, 2024 | Reserved | Reserved by Linux |
| April 10, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2021-47183 (Linux). CVSS 8.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf | — |
| Linux | Linux | — | 2.6.38 | 5.10.241 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-47183 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.