CVE-2025-71231

Kernel data disclosure or crash via mode exhaustion

Published Feb 18, 2026 · Updated Feb 18, 2026

Out-of-bounds access in the Linux kernel IAA crypto driver allows local users to disclose kernel data or crash the system. The find_empty_iaa_compression_mode function returns IAA_COMP_MODES_MAX when every slot is occupied, and add_iaa_compression_mode then indexes one element past the iaa_compression_modes array. Reachability requires the Intel IAA crypto driver and exhausted compression-mode slots; the published record does not identify a concrete user-space trigger.

CVSS severity7.1
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux kernel IAA crypto driver allows local users to disclose kernel data or crash the system. The find_empty_iaa_compression_mode function returns IAA_COMP_MODES_MAX when every slot is occupied, and add_iaa_compression_mode then indexes one element past the iaa_compression_modes array. Reachability requires the Intel IAA crypto driver and exhausted compression-mode slots; the published record does not identify a concrete user-space trigger.

The record

CVE
CVE-2025-71231
Published
Feb 18, 2026
Updated
Feb 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 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 <c77b33b58512708bd5603f48465f018c8b748847
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d75207465eed20bc9b0daa4a0927de9568996067
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <de16f5bca05cace238d237791ed1b6e9d22dab60

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c77b33b58512708bd5603f48465f018c8b748847; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d75207465eed20bc9b0daa4a0927de9568996067; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <de16f5bca05cace238d237791ed1b6e9d22dab60

Published CVSS scores

6.6Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
7.1NIST NVDCVSS: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

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Your stack

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