Answer in brief
CVE-2021-47183 records a High severity (CVSS 8.8) vulnerability in scsi: lpfc: Fix link down processing to address NULL pointer dereference. 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.
CVSS is 8.8. 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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf <04c1af683270e4709a594bb1691b8800b945035a || >=70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf <28de48a7cea495ab48082d9ff4ef63f7cb4e563a || >=70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf <1854f53ccd88ad4e7568ddfafafffe71f1ceb0a6 | 04c1af683270e4709a594bb1691b8800b945035a, 28de48a7cea495ab48082d9ff4ef63f7cb4e563a, 1854f53ccd88ad4e7568ddfafafffe71f1ceb0a6 |
| Linux/Linuxgeneric | 2.6.38 | Not reported |
Published upstream
Apr 10, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47183 records a High severity (CVSS 8.8) vulnerability in scsi: lpfc: Fix link down processing to address NULL pointer dereference. 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.
CVSS is 8.8. 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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf <04c1af683270e4709a594bb1691b8800b945035a || >=70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf <28de48a7cea495ab48082d9ff4ef63f7cb4e563a || >=70f3c073362ef7b5e55c92b83eb2dd9a7fb4e9bf <1854f53ccd88ad4e7568ddfafafffe71f1ceb0a6 | 04c1af683270e4709a594bb1691b8800b945035a, 28de48a7cea495ab48082d9ff4ef63f7cb4e563a, 1854f53ccd88ad4e7568ddfafafffe71f1ceb0a6 |
| Linux/Linuxgeneric | 2.6.38 | Not reported |
Published upstream
Apr 10, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.