Security update for the Linux Kernel RT (Live Patch 2 for SUSE Linux Enterprise 16)
Affects SUSESource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 07:57 UTC
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
Disclosed: evidence found.
CVE published 9 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 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
- nvd.nist.gov/vuln/detail/CVE-2025-40159 (opens in a new tab)
- git.kernel.org/stable/c/07ca98f906a403637fc5e513a872a50ef1247f3b (opens in a new tab)
- git.kernel.org/stable/c/1463cd066f32efd56ddfd3ac4e3524200f362980 (opens in a new tab)
- git.kernel.org/stable/c/5b5fffa7c81e55d8c8edf05ad40d811ec7047e21 (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/suse-su-2026_21009-1.json (opens in a new tab)
- suse.com/support/update/announcement/2026/suse-su-202621009-1/ (opens in a new tab)
- lists.suse.com/pipermail/sle-updates/2026-April/045397.html (opens in a new tab)
- bugzilla.suse.com/1253404 (opens in a new tab)
- bugzilla.suse.com/1256780 (opens in a new tab)
- bugzilla.suse.com/1257238 (opens in a new tab)
- bugzilla.suse.com/1258051 (opens in a new tab)
- bugzilla.suse.com/1258183 (opens in a new tab)
- bugzilla.suse.com/1258784 (opens in a new tab)
- suse.com/security/cve/CVE-2025-40159/ (opens in a new tab)
- suse.com/security/cve/CVE-2025-71120/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-22999/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-23074/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-23111/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-23209/ (opens in a new tab)