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VulnerabilityPublished Updated

CVE-2025-22075: Linux kernel · rtnetlink: Allocate vfinfo size for VF GUIDs when supported

Affects Linux kernelSource GCVE Database

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Authoritative record:CVE-2025-22075· Low

Not known to be exploited · CVSS 5.5 Low · fixed in 5.15.0-1086.93~20.04.1 : update Linux kernel when convenient.

Data as of 12 Nov 2026, 19:26 UTC

CVSS 3.1 base score
5.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
Patch
Available – fixed in 5.15.0-1086.93~20.04.1, 5.15.0-1091.100~20.04.1, 5.15.0-1085.94~20.04.1 +64
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Apr 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=questingOther threatsAffected
  • 6.17.0-1003.3 – 6.17.0-1017.17
10 affected builds
Fixed in–
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-86.87
Fixed in
  • 6.8.0-86.87
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1041.43
Fixed in
  • 6.8.0-1041.43
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1041.47
Fixed in
  • 6.8.0-1041.47
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threatsAffected
  • <6.11.0-1018.18~24.04.1
Fixed in
  • 6.11.0-1018.18~24.04.1
Ubuntu 24.04 LTSlinux-azure-nvidiapkg:deb/ubuntu/linux-azure-nvidia?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1029.32
Fixed in
  • 6.8.0-1029.32

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and included in Linux kernel versions 5.15.0-1039.39 and later related releases. Users should update their Linux kernel to one of the fixed versions listed by their distribution. After updating, a system reboot is required to apply the fix. No additional mitigation actions are necessary.

Description

A vulnerability in the Linux kernel's rtnetlink subsystem caused improper allocation of message size when handling VF port and node GUIDs, leading to kernel warnings and message transmission failures. This issue was fixed in multiple Linux kernel versions starting from 5.15.0-1039.39 and related releases. The flaw could cause denial of service by preventing proper netlink message handling but does not impact confidentiality or integrity.

References

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