Riskcovery

CVE-2023-53543

vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check

State
Published
Severity
Not scored
Published
Oct 4, 2025
Updated
Jun 1, 2026
Reserved
Oct 4, 2025

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 447092100c7e71aa20469a270fcee441d807ed58 to before baed19c108ac8287425b93a44985bbe9a0b1af8dAffected
  • ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a to before ff71709445ac033e6e250d971683110e4781c068Affected
  • ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a to before ea65e8b5e6b1a34deda7564f09c90e9e80db436aAffected
  • ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a to before 5d6ba607d6cb5c58a4ddf33381e18c83dbb4098fAffected
  • 5.15.198 to before 5.15.209Affected
LinuxLinux
  • 5.16Affected
  • before 5.16Not affected
  • 5.15.209 through 5.15.*Not affected
  • 6.1.47 through 6.1.*Not affected
  • 6.4.12 through 6.4.*Not affected
  • 6.5 and laterNot affected

References

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