CVE-2025-71116

Kernel-memory disclosure via unchecked OSD map length

Published Jan 14, 2026 · Updated Jan 14, 2026

Out-of-bounds read in Linux Kernel libceph allows local users to expose kernel memory and crash the kernel via a corrupted OSD map. decode_pool() treats the ceph_pg_pool envelope's encoded length as the sole boundary, then decodes or skips version-dependent fields without checking every read against the input buffer. Exposure requires an active kernel Ceph client to process a maliciously shortened OSD map; impact is limited to kernel-memory disclosure and a kernel crash.

CVSS severity7.1
High
EPSS probability0.37%
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

Out-of-bounds read in Linux Kernel libceph allows local users to expose kernel memory and crash the kernel via a corrupted OSD map. decode_pool() treats the ceph_pg_pool envelope's encoded length as the sole boundary, then decodes or skips version-dependent fields without checking every read against the input buffer. Exposure requires an active kernel Ceph client to process a maliciously shortened OSD map; impact is limited to kernel-memory disclosure and a kernel crash.

The record

CVE
CVE-2025-71116
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2acb8517429ab42146c6c0ac1daed1f03d2fd125
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5d0d8c292531fe356c4e94dcfdf7d7212aca9957
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8c738512714e8c0aa18f8a10c072d5b01c83db39
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c82e39ff67353a5a6cbc07b786b8690bd2c45aaa
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e927ab132b87ba3f076705fc2684d94b24201ed1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2acb8517429ab42146c6c0ac1daed1f03d2fd125; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5d0d8c292531fe356c4e94dcfdf7d7212aca9957; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <8c738512714e8c0aa18f8a10c072d5b01c83db39; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c82e39ff67353a5a6cbc07b786b8690bd2c45aaa; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e927ab132b87ba3f076705fc2684d94b24201ed1

Published CVSS scores

7.1UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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