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VulnerabilityPublished Updated

CVE-2025-10263: linux-aws-5.15, linux-azure-5.15, linux-azure-fde-5.15, linux-intel-iotg-5.15 vulnerabilities

Affects Linux kernelSource GCVE Database

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Authoritative record:CVE-2025-10263· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical · fixed in 5.15.0-1116.123~20.04.1 : patch Linux kernel as a priority.

Data as of 6 Nov 2026, 14:52 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 5.15.0-1116.123~20.04.1, 5.15.0-1122.131~20.04.1, 5.15.0-1121.130~20.04.1 +1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  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 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu Pro 20.04 LTSlinux-aws-5.15pkg:deb/ubuntu/linux-aws-5.15?arch=source&distro=esm-infra/focalOther threatsAffected
  • <5.15.0-1116.123~20.04.1
Fixed in
  • 5.15.0-1116.123~20.04.1
Ubuntu Pro 20.04 LTSlinux-azure-5.15pkg:deb/ubuntu/linux-azure-5.15?arch=source&distro=esm-infra/focalOther threatsAffected
  • <5.15.0-1122.131~20.04.1
Fixed in
  • 5.15.0-1122.131~20.04.1
Ubuntu Pro 20.04 LTSlinux-azure-fde-5.15pkg:deb/ubuntu/linux-azure-fde-5.15?arch=source&distro=esm-infra/focalOther threatsAffected
  • <5.15.0-1121.130~20.04.1
Fixed in
  • 5.15.0-1121.130~20.04.1
Ubuntu Pro 20.04 LTSlinux-intel-iotg-5.15pkg:deb/ubuntu/linux-intel-iotg-5.15?arch=source&distro=esm-infra/focalOther threatsAffected
  • <5.15.0-1111.117~20.04.1
Fixed in
  • 5.15.0-1111.117~20.04.1

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 updated kernel versions 5.15.0-1116.123~20.04.1, 5.15.0-1122.131~20.04.1, 5.15.0-1121.130~20.04.1, and 5.15.0-1111.117~20.04.1. Users should update their systems to these versions or later and reboot to apply the fixes. Due to ABI changes, recompilation and reinstallation of third-party kernel modules are required. Ubuntu Pro subscribers have access to these fixes. No known exploits are reported in the wild at this time.

Description

Multiple security vulnerabilities were discovered in the Linux kernel versions used in AWS, Azure, and Intel IoT platforms, including a critical flaw in ARM64 processors where a local attacker could write to memory after permissions were revoked, potentially bypassing memory protections or escalating privileges. These issues affect various subsystems such as network drivers, file systems, and protocols. Fixes are available in updated kernel versions, and users are advised to apply these updates and reboot their systems.

References

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