CVE-2023-53000

HIGH EPSS 9.8%
Published Mar 27, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Mar 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.

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
9.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-129

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥2.6.15  –  <5.4.231
linuxlinux_kernel*≥5.5  –  <5.10.166
linuxlinux_kernel*≥5.11  –  <5.15.91
linuxlinux_kernel*≥5.16  –  <6.1.9
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any
linuxlinux_kernel6.2any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3e5082b1c66c7783fbcd79b5b178573230e528ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/41b74e95f297ac360ca7ed6bf200100717cb6c45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/539ca5dcbc91134bbe2c45677811c31d8b030d2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/992e4ff7116a77968039277b5d6aaa535c2f2184
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f0950402e8c76e7dcb08563f1b4e8000fbc62455
    Patch