Answer in brief
CVE-2021-4090 records a High severity (CVSS 7.1) vulnerability in CVE Program Container. The current sources do not mark it as known exploited. The current feed maps Linux/kernel (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (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 7.1. 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/kernel (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/kernelgeneric | >=5.11 <5.15.5 | 5.15.5 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Feb 18, 2022
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 25, 2026
An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.
Quoted source text, attributed separately from HOL analysis.