VulnerabilityPublished 26 May 2026Updated 4 Nov 2026

CVE-2025-71088: linux-azure, linux-azure-6.17 vulnerabilities

Affects Linux kernelSource GCVE Database

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Mentioned vulnerabilities

CVE-2026-31431

Not known to be exploited · fixed in 6.17.0-1015.15~24.04.1 : patch Linux kernel soon.

Data as of 5 Nov 2026, 00:01 UTC

Severity

High

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 6.17.0-1015.15~24.04.1, 6.17.0-1015.15

Exploitation evidence

Disclosed: evidence found.
CVE published 26 May 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 4 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-8310-1

What to do

Upgrade the Ubuntu to 6.17.0-1015.15~24.04.1 (linux-azure-6.17 package) or 6.17.0-1015.15 (linux-azure package).

Patches and advisories

ubuntu.com/security/notices/USN-8310-1 (opens in a new tab)

Affected software

Product	Affected	Fixed in
Ubuntu 25.10linux-azure`pkg:deb/ubuntu/linux-azure?arch=source&distro=questing`Other threats	Affected <6.17.0-1015.15	Fixed in 6.17.0-1015.15
Ubuntu 24.04 LTSlinux-azure-6.17`pkg:deb/ubuntu/linux-azure-6.17?arch=source&distro=noble`Other threats	Affected <6.17.0-1015.15~24.04.1	Fixed in 6.17.0-1015.15~24.04.1

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 users should update to linux-azure kernel versions 6.17.0-1015.15 or 6.17.0-1015.15~24.04.1 as appropriate for their Ubuntu release. After updating, a system reboot is required to apply the fixes. Due to an ABI change, recompilation and reinstallation of third-party kernel modules may be necessary. Follow the vendor advisory at https://ubuntu.com/security/notices/USN-8310-1 for detailed update instructions.

Description

Multiple security vulnerabilities were discovered in the Linux kernel, specifically affecting the linux-azure-6.17 kernel used in Microsoft Azure cloud systems. Notably, the algif_aead cryptographic module improperly handled in-place cryptographic operations, allowing local attackers to escalate privileges or potentially escape containers. The update addresses flaws across various kernel subsystems including cryptographic APIs, network drivers, memory management, and others. Fixed versions have been released and users are advised to update and reboot to apply the patches.

Impact

Local attackers could exploit the cryptographic module flaw to escalate privileges or escape container isolation, potentially compromising the affected system. Other vulnerabilities in various kernel subsystems could also be leveraged to compromise system security. No known exploits in the wild have been reported at this time.

Summary

The linux-azure-6.17 kernel contains multiple security vulnerabilities, including a critical flaw in the algif_aead module that mishandles in-place cryptographic operations (CVE-2026-31431), enabling local privilege escalation or container escape. Additional vulnerabilities affect subsystems such as the S390 architecture, GPU drivers, Ethernet bonding, Microsoft Azure Network Adapter, NFS server daemon, Distributed Switch Architecture, Netfilter, cgroups, kernel kexec syscall, memory management, MAC80211, Multipath TCP, packet sockets, TLS protocol, and Unix domain sockets. These issues collectively could allow attackers to compromise system integrity. The vendor has released fixed kernel versions 6.17.0-1015.15 and 6.17.0-1015.15~24.04.1 to address these vulnerabilities.

References

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