boxscore/security
CVE · referencelatest edition

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.

CVE-2021-47183MEDIUM
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).
CWE-476 · CNA: Linux · CVSS v3.1 · 4 references · NVD status: Modified

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
DateEventDetail
March 25, 2024ReservedReserved by Linux
April 10, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2021-47183 (Linux). CVSS 8.8 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf
LinuxLinux2.6.385.10.241

Weaknesses

CWE-476

References (4)

Related

Authoritative record: CVE-2021-47183 at cve.org

Vendors: linux

Weaknesses: CWE-476

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.