Answer in brief
CVE-2021-46908 records a High severity (CVSS 7.1) vulnerability in bpf: Use correct permission flag for mixed signed bounds arithmetic. 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 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/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 | >=2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 <4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 || >=2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 <4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 || >=2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 <9601148392520e2e134936e76788fc2a6371e7be | 4f3ff11204eac0ee23acf64deecb3bad7b0db0c6, 4ccdc6c6cae38b91c871293fb0ed8c6845a61b51, 9601148392520e2e134936e76788fc2a6371e7be |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Feb 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-46908 records a High severity (CVSS 7.1) vulnerability in bpf: Use correct permission flag for mixed signed bounds arithmetic. 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 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/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 | >=2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 <4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 || >=2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 <4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 || >=2c78ee898d8f10ae6fb2fa23a3fbaec96b1b7366 <9601148392520e2e134936e76788fc2a6371e7be | 4f3ff11204eac0ee23acf64deecb3bad7b0db0c6, 4ccdc6c6cae38b91c871293fb0ed8c6845a61b51, 9601148392520e2e134936e76788fc2a6371e7be |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Feb 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.
Quoted source text, attributed separately from HOL analysis.