CyberSecBulletin
CVE-2025-71116NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2025-71116 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions d061be4c8040ffb1110d537654a038b8b6ad39d2, 145d140abda80e33331c5781d6603014fa75d258, c82e39ff67353a5a6cbc07b786b8690bd2c45aaa as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.46% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Linux to d061be4c8040ffb1110d537654a038b8b6ad39d2 or 145d140abda80e33331c5781d6603014fa75d258 or c82e39ff67353a5a6cbc07b786b8690bd2c45aaa or e927ab132b87ba3f076705fc2684d94b24201ed1, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 5.10.248 or 5.15.198 or 6.1.160 or 6.6.120, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, d061be4c8040ffb1110d537654a038b8b6ad39d2; 4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, 145d140abda80e33331c5781d6603014fa75d258; 4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, c82e39ff67353a5a6cbc07b786b8690bd2c45aaa; 4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, e927ab132b87ba3f076705fc2684d94b24201ed1; 4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, 5d0d8c292531fe356c4e94dcfdf7d7212aca9957; 4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, 2acb8517429ab42146c6c0ac1daed1f03d2fd125; 4f6a7e5ee1393ec4b243b39dac9f36992d161540 up to, but not including, 8c738512714e8c0aa18f8a10c072d5b01c83db39; 3.9d061be4c8040ffb1110d537654a038b8b6ad39d2, 145d140abda80e33331c5781d6603014fa75d258, c82e39ff67353a5a6cbc07b786b8690bd2c45aaa, e927ab132b87ba3f076705fc2684d94b24201ed1, 5d0d8c292531fe356c4e94dcfdf7d7212aca9957, 2acb8517429ab42146c6c0ac1daed1f03d2fd125
LinuxLinux Kernel3.9.1 up to, but not including, 5.10.248; 5.11 up to, but not including, 5.15.198; 5.16 up to, but not including, 6.1.160; 6.2 up to, but not including, 6.6.120; 6.7 up to, but not including, 6.12.64; 6.13 up to, but not including, 6.18.3; 3.9; 6.195.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.3

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.19.1CriticalCNA
CVSS 3.17.1HighNVD

Official description

In the Linux kernel, the following vulnerability has been resolved: libceph: make decode_pool() more resilient against corrupted osdmaps If the osdmap is (maliciously) corrupted such that the encoded length of ceph_pg_pool envelope is less than what is expected for a particular encoding version, out-of-bounds reads may ensue because the only bounds check that is there is based on that length value. This patch adds explicit bounds checks for each field that is decoded or skipped.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.

More Out-of-bounds Read vulnerabilities (CWE-125)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Out-of-bounds Read vulnerabilities

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