CVE-2025-38561VulnerabilityPublished 11 Feb 2026Updated 3 Nov 2026

linux-aws-5.15, linux-gcp-5.15, linux-nvidia-tegra-igx, linux-oracle-5.15, linux-xilinx-zynqmp vulnerabilities

Affects Linux kernelSource GCVE Database

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Not known to be exploited · fixed in 5.15.0-1099.106~20.04.1 : patch Linux kernel soon.

Data as of 3 Nov 2026, 17:31 UTC

Severity

High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Patch: Available – fixed in 5.15.0-1099.106~20.04.1, 5.15.0-1099.108~20.04.1, 5.15.0-1096.102~20.04.1 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 3 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

usn-8013-4

What to do

Upgrade to a fixed release listed under Affected software.

Patches and advisories

ubuntu.com/security/notices/USN-8013-4 (opens in a new tab)

Affected software

Product	Affected	Fixed in
Ubuntu 22.04 LTSlinux-nvidia-tegra-igx`pkg:deb/ubuntu/linux-nvidia-tegra-igx?arch=source&distro=jammy`Other threats	Affected <5.15.0-1040.40	Fixed in 5.15.0-1040.40
Ubuntu 22.04 LTSlinux-xilinx-zynqmp`pkg:deb/ubuntu/linux-xilinx-zynqmp?arch=source&distro=jammy`Other threats	Affected <5.15.0-1063.67	Fixed in 5.15.0-1063.67
Ubuntu Pro 20.04 LTSlinux-aws-5.15`pkg:deb/ubuntu/linux-aws-5.15?arch=source&distro=esm-infra/focal`Other threats	Affected <5.15.0-1099.106~20.04.1	Fixed in 5.15.0-1099.106~20.04.1
Ubuntu Pro 20.04 LTSlinux-gcp-5.15`pkg:deb/ubuntu/linux-gcp-5.15?arch=source&distro=esm-infra/focal`Other threats	Affected <5.15.0-1099.108~20.04.1	Fixed in 5.15.0-1099.108~20.04.1
Ubuntu Pro 20.04 LTSlinux-oracle-5.15`pkg:deb/ubuntu/linux-oracle-5.15?arch=source&distro=esm-infra/focal`Other threats	Affected <5.15.0-1096.102~20.04.1	Fixed in 5.15.0-1096.102~20.04.1

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

AI-suggested

A fix is available and users should update their Linux kernel packages to the fixed versions as specified in the Ubuntu security notice USN-8013-4. After updating, a system reboot is required to apply the changes. Due to an ABI change in the kernel update, users must recompile and reinstall any third-party kernel modules. Standard system upgrades will handle this automatically unless kernel metapackages have been manually removed.

Description

Multiple security vulnerabilities were discovered in the Linux kernel affecting several subsystems including the Cryptographic API and SMB network file system. These flaws could potentially allow an attacker to compromise affected systems. The issues impact various Linux kernel versions used in AWS, GCP, NVIDIA Tegra IGX, Oracle Cloud, and Xilinx ZynqMP environments. Fixes have been released and are available through Ubuntu security updates. Users must apply these updates and reboot their systems to ensure protection. Due to ABI changes, recompilation of third-party kernel modules is required after updating.

Impact

An attacker could potentially exploit these vulnerabilities in the Linux kernel to compromise the affected system. The flaws exist in critical subsystems such as the Cryptographic API and SMB network file system, which are integral to system security and network file sharing. Exploitation could lead to unauthorized access or other system compromises. No known exploits in the wild have been reported at this time.

Summary

Several security issues were identified in the Linux kernel subsystems, specifically the Cryptographic API and SMB network file system, which could allow an attacker to compromise the system. The vulnerabilities affect multiple Linux kernel variants including linux-aws-5.15, linux-gcp-5.15, linux-nvidia-tegra-igx, linux-oracle-5.15, and linux-xilinx-zynqmp. The affected versions include various 5.15 kernel builds prior to fixed versions such as 5.15.0-1099.106~20.04.1 and others. Ubuntu has released patches for these vulnerabilities as part of security notices USN-8013-4 and related advisories. Users are advised to update to the fixed package versions and reboot their systems. The update involves an ABI change requiring recompilation of third-party kernel modules.

References

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Exploitation evidence

What to do

Patches and advisories

Affected software

Description

AI analysisMachine-generated, updated 3 Nov 2026, 17:31 UTC

Public exploits and detectionGitHub proofs of concept

Technical details

References

Community reviews

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