CVE-2023-53543

HIGH EPSS 4.6%
Published Oct 4, 20258mo ago · Modified Jun 18, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 4, 2025 8mo ago
Last Modified Jun 18, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.15.198  –  <5.15.209
linuxlinux_kernel*≥5.16  –  <6.1.47
linuxlinux_kernel*≥6.2  –  <6.4.12
linuxlinux_kernel6.5any
linuxlinux_kernel6.5any
linuxlinux_kernel6.5any
linuxlinux_kernel6.5any
linuxlinux_kernel6.5any
linuxlinux_kernel6.5any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/baed19c108ac8287425b93a44985bbe9a0b1af8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea65e8b5e6b1a34deda7564f09c90e9e80db436a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff71709445ac033e6e250d971683110e4781c068
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/baed19c108ac8287425b93a44985bbe9a0b1af8d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea65e8b5e6b1a34deda7564f09c90e9e80db436a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ff71709445ac033e6e250d971683110e4781c068
    Patch