CVE-2026-46028

Local system crash via shared IV race

Published May 27, 2026 · Updated May 27, 2026

Race condition in affected Linux Kernel releases allows local users to crash the system through concurrent AF_ALG AEAD AIO requests. In crypto/algif_aead.c, _aead_recvmsg passes the socket-wide ctx->iv buffer into an asynchronous request instead of copying it into per-request storage. Low-privileged local access and later activity on the same socket are required; the resulting crash interrupts the host without disclosed data exposure or modification.

CVSS severity5.5
Medium
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

Race condition in affected Linux Kernel releases allows local users to crash the system through concurrent AF_ALG AEAD AIO requests. In crypto/algif_aead.c, _aead_recvmsg passes the socket-wide ctx->iv buffer into an asynchronous request instead of copying it into per-request storage. Low-privileged local access and later activity on the same socket are required; the resulting crash interrupts the host without disclosed data exposure or modification.

The record

CVE
CVE-2026-46028
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=4.14
  2. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <08ea39a556ecd39b33c2b4888861001c6706a62e
  3. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <3d72f8c6490dc79210b64270740cb2a8619361a4
  4. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <46fdb39e83227b5d39f7c934a0947ea913f13c18
  5. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <5aa58c3a572b3e3b6c786953339f7978b845cc52
  6. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <a920cabdb0b7cf1f4e11a20524253ae5bd09092b
  7. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <c2138c9bd02af19e0b407376140cd5435b0d81da
  8. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <ebc235675f24b0e3f8bc92b8419471d42f837d8f
  9. Affected versionversion=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <fa0fcec9b49d58e71df7ede91ecd86855f608e85

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.14; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <08ea39a556ecd39b33c2b4888861001c6706a62e; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <3d72f8c6490dc79210b64270740cb2a8619361a4; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <46fdb39e83227b5d39f7c934a0947ea913f13c18; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <5aa58c3a572b3e3b6c786953339f7978b845cc52; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <a920cabdb0b7cf1f4e11a20524253ae5bd09092b; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <c2138c9bd02af19e0b407376140cd5435b0d81da; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <ebc235675f24b0e3f8bc92b8419471d42f837d8f; version=d887c52d6ae43aeebd249b5f2f1333e60236aa60 <fa0fcec9b49d58e71df7ede91ecd86855f608e85

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/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.

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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

T1499.004Application or System Exploitation

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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