CVE-2023-53543

Advisory lineage Upstream: 0 Downstream: 12
Modified
Published: 04 Oct 2025, 15:16
Last modified:01 Jun 2026, 16:04

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability -0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Oct 2025, 15:16
Published
Vulnerability first disclosed
01 Jun 2026, 16:04
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    447092100c7e71aa20469a270fcee441d807ed58 | ≥ 5.15.198, < 5.16 | ≥ 447092100c7e71aa20469a270fcee441d807ed58, < baed19c108ac8287425b93a44985bbe9a0b1af8d | ≥ ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a, < ff71709445ac033e6e250d971683110e4781c068 | ≥ ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a, < ea65e8b5e6b1a34deda7564f09c90e9e80db436a | ≥ ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a, < 5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f | ≥ 5.15.198, < 5.15.209 | 5.16

  • linux•linux_kernel

    ≥ 5.15.198, < 6.1.47 | ≥ 6.2, < 6.4.12 | 6.5:rc1 | 6.5:rc2 | 6.5:rc3 | 6.5:rc4 | 6.5:rc5 | 6.5:rc6

References (4)