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

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Summary

CVECVE-2023-53543
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-10-04 16:15:49 UTC
Updated2026-06-18 14:29:50 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-787

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 447092100c7e71aa20469a270fcee441d807ed58 baed19c108ac8287425b93a44985bbe9a0b1af8d git Not specified
CNA Linux Linux affected ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a ff71709445ac033e6e250d971683110e4781c068 git Not specified
CNA Linux Linux affected ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a ea65e8b5e6b1a34deda7564f09c90e9e80db436a git Not specified
CNA Linux Linux affected ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a 5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f git Not specified
CNA Linux Linux affected 5.15.198 5.15.209 semver Not specified
CNA Linux Linux affected 5.16 Not specified
CNA Linux Linux unaffected 5.16 semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.47 6.1.* semver Not specified
CNA Linux Linux unaffected 6.4.12 6.4.* semver Not specified
CNA Linux Linux unaffected 6.5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/baed19c108ac8287425b93a44985bbe9a0b1af8d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ff71709445ac033e6e250d971683110e4781c068 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ea65e8b5e6b1a34deda7564f09c90e9e80db436a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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