CVE-2026-72011

Local information disclosure via speculative array indexing

Published Aug 15, 2026 · Updated Aug 15, 2026

Information disclosure in the s390/diag component of Linux allows local users to indirectly read kernel data through the /dev/diag interface. memtop_get_page_count validates a user-controlled level but uses level minus one to index memtop_pages without blocking speculative execution. Reachability requires an s390 system with DIAG 0x310 memory-topology support, and the reported consequence is limited to indirect disclosure.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in the s390/diag component of Linux allows local users to indirectly read kernel data through the /dev/diag interface. memtop_get_page_count validates a user-controlled level but uses level minus one to index memtop_pages without blocking speculative execution. Reachability requires an s390 system with DIAG 0x310 memory-topology support, and the reported consequence is limited to indirect disclosure.

The record

CVE
CVE-2026-72011
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0d30871739ab433e114b0058f08b6b1c7b816f7e <83fe36f81200b7a85f8efe0a68a4e58be84d5f64
  2. Affected versionversion=0d30871739ab433e114b0058f08b6b1c7b816f7e <b7577fe4c47a31ca7c99714c53244a44af03cdfe
  3. Affected versionversion=0d30871739ab433e114b0058f08b6b1c7b816f7e <c6b4d454865a81ceea1422243aaaedc363b6f713
  4. Affected versionversion=6.14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0d30871739ab433e114b0058f08b6b1c7b816f7e <83fe36f81200b7a85f8efe0a68a4e58be84d5f64; version=0d30871739ab433e114b0058f08b6b1c7b816f7e <b7577fe4c47a31ca7c99714c53244a44af03cdfe; version=0d30871739ab433e114b0058f08b6b1c7b816f7e <c6b4d454865a81ceea1422243aaaedc363b6f713; version=6.14

Published CVSS scores

2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo