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CVE-2025-40159VulnerabilityPublished Updated

Security update for the Linux Kernel RT (Live Patch 2 for SUSE Linux Enterprise 16)

Affects SUSESource GCVE Database

0

Not known to be exploited.

Data as of 26 Oct 2026, 07:57 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 2026-10-26.

What to do

AI-suggested

The vulnerability has been resolved by SUSE with a security update that promotes desc->len to 64-bit and adds explicit overflow checks for desc->addr. Users should apply the official SUSE Linux Enterprise security update (Live Patch 2 for SUSE Linux Enterprise 16) to remediate this issue. Patch status is not explicitly confirmed in the provided data; users should consult the SUSE Product Security Team advisories for the latest remediation guidance.

Description

A high-severity vulnerability in the Linux kernel's AF_XDP socket subsystem was addressed by SUSE. The flaw involved insufficient validation of userspace-supplied xdp_desc structures, allowing crafted inputs to bypass checks due to integer overflow conditions. This could lead to undefined behavior or queuing of invalid frames for transmission. The fix promotes desc->len to 64-bit and adds explicit overflow checks. No specific affected versions are clearly stated.

References

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