CVE-2025-71113

Crypto request interruption via uninitialized inflight flag

Published Jan 14, 2026 · Updated Jan 14, 2026

Use of uninitialized memory in the Linux Kernel AF_ALG interface allows local users to interrupt asynchronous crypto requests. AF_ALG contexts allocated by sock_kmalloc() are not cleared, so af_alg_alloc_areq() reads a garbage ctx->inflight flag as true and returns -EBUSY. Low-privilege local access to the crypto user API is required, and the demonstrated consequence is random request rejection rather than a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized memory in the Linux Kernel AF_ALG interface allows local users to interrupt asynchronous crypto requests. AF_ALG contexts allocated by sock_kmalloc() are not cleared, so af_alg_alloc_areq() reads a garbage ctx->inflight flag as true and returns -EBUSY. Low-privilege local access to the crypto user API is required, and the demonstrated consequence is random request rejection rather than a kernel crash.

The record

CVE
CVE-2025-71113
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-908, T1499.004
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

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Is a vulnerable build present?

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

  1. Affected versionversion=2.6.38
  2. Affected versionversion=fe869cdb89c95d060c77eea20204d6c91f233b53 <51a5ab36084f3251ef87eda3e6a6236f6488925e
  3. Affected versionversion=fe869cdb89c95d060c77eea20204d6c91f233b53 <5a4b65523608974a81edbe386f8a667a3e10c726
  4. Affected versionversion=fe869cdb89c95d060c77eea20204d6c91f233b53 <6f6e309328d53a10c0fe1f77dec2db73373179b6
  5. Affected versionversion=fe869cdb89c95d060c77eea20204d6c91f233b53 <84238876e3b3b262cf62d5f4d1338e983fb27010
  6. Affected versionversion=fe869cdb89c95d060c77eea20204d6c91f233b53 <f81244fd6b14fecfa93b66b6bb1d59f96554e550

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=2.6.38; version=fe869cdb89c95d060c77eea20204d6c91f233b53 <51a5ab36084f3251ef87eda3e6a6236f6488925e; version=fe869cdb89c95d060c77eea20204d6c91f233b53 <5a4b65523608974a81edbe386f8a667a3e10c726; version=fe869cdb89c95d060c77eea20204d6c91f233b53 <6f6e309328d53a10c0fe1f77dec2db73373179b6; version=fe869cdb89c95d060c77eea20204d6c91f233b53 <84238876e3b3b262cf62d5f4d1338e983fb27010; version=fe869cdb89c95d060c77eea20204d6c91f233b53 <f81244fd6b14fecfa93b66b6bb1d59f96554e550

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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.

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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-908Use of Uninitialized Resource
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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