Answer in brief
CVE-2023-53543 records a High severity (CVSS 7.8) vulnerability in vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check. 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 7.8. 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 |
| cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.5:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.5:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.5:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.5:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=447092100c7e71aa20469a270fcee441d807ed58 <baed19c108ac8287425b93a44985bbe9a0b1af8d || >=ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a <ff71709445ac033e6e250d971683110e4781c068 || >=ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a <ea65e8b5e6b1a34deda7564f09c90e9e80db436a || >=ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a <5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f || >=5.15.198 <5.15.209 | baed19c108ac8287425b93a44985bbe9a0b1af8d, ff71709445ac033e6e250d971683110e4781c068, ea65e8b5e6b1a34deda7564f09c90e9e80db436a, 5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f, 5.15.209 |
| Linux/Linuxgeneric | 5.16 | Not reported |
Published upstream
Oct 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute being described produces a valid nlattr pointer in info->attrs before entering into each handler in vdpa_nl_ops. That is to say, the missing part in vdpa_nl_policy may lead to illegal nlattr after parsing, which could lead to OOB read just like CVE-2023-3773. This patch adds the missing nla_policy for vdpa max vqp attr to avoid such bugs.
Quoted source text, attributed separately from HOL analysis.