Answer in brief
CVE-2021-47604 records a High severity (CVSS 7.1) vulnerability in vduse: check that offset is within bounds in get_config(). 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 | >=c8a6153b6c59d95c0e091f053f6f180952ade91e <ebbbc5fea3f648175df1aa3f127c78eb0252cc2a || >=c8a6153b6c59d95c0e091f053f6f180952ade91e <dc1db0060c02d119fd4196924eff2d1129e9a442 | ebbbc5fea3f648175df1aa3f127c78eb0252cc2a, dc1db0060c02d119fd4196924eff2d1129e9a442 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jun 19, 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: vduse: check that offset is within bounds in get_config() This condition checks "len" but it does not check "offset" and that could result in an out of bounds read if "offset > dev->config_size". The problem is that since both variables are unsigned the "dev->config_size - offset" subtraction would result in a very high unsigned value. I think these checks might not be necessary because "len" and "offset" are supposed to already have been validated using the vhost_vdpa_config_validate() function. But I do not know the code perfectly, and I like to be safe.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-47604 records a High severity (CVSS 7.1) vulnerability in vduse: check that offset is within bounds in get_config(). 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 | >=c8a6153b6c59d95c0e091f053f6f180952ade91e <ebbbc5fea3f648175df1aa3f127c78eb0252cc2a || >=c8a6153b6c59d95c0e091f053f6f180952ade91e <dc1db0060c02d119fd4196924eff2d1129e9a442 | ebbbc5fea3f648175df1aa3f127c78eb0252cc2a, dc1db0060c02d119fd4196924eff2d1129e9a442 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jun 19, 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: vduse: check that offset is within bounds in get_config() This condition checks "len" but it does not check "offset" and that could result in an out of bounds read if "offset > dev->config_size". The problem is that since both variables are unsigned the "dev->config_size - offset" subtraction would result in a very high unsigned value. I think these checks might not be necessary because "len" and "offset" are supposed to already have been validated using the vhost_vdpa_config_validate() function. But I do not know the code perfectly, and I like to be safe.
Quoted source text, attributed separately from HOL analysis.