CVE-2026-45937

Local kernel panic via wrong detach iterator

Published May 27, 2026 · Updated May 27, 2026

Kernel panic in the Linux Kernel EIP-93 crypto driver 6.15 through 6.18.13 and 6.19 through 6.19.3 allows local users to crash the system. The eip93_unregister_algs function uses the outer limit index instead of the inner loop index for hash entries, so driver detach unregisters the same hash algorithm repeatedly. Exploitation requires local low-privileged access and a reachable EIP-93 driver-detach path; the reported consequence is availability loss only.

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

Kernel panic in the Linux Kernel EIP-93 crypto driver 6.15 through 6.18.13 and 6.19 through 6.19.3 allows local users to crash the system. The eip93_unregister_algs function uses the outer limit index instead of the inner loop index for hash entries, so driver detach unregisters the same hash algorithm repeatedly. Exploitation requires local low-privileged access and a reachable EIP-93 driver-detach path; the reported consequence is availability loss only.

The record

CVE
CVE-2026-45937
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1529
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=6.15
  2. Affected versionversion=9739f5f93b7806a684713ba42e6ed2d1df7c8100 <7530c3595d1e23bc5938cbd44b7e8f33457fc71f
  3. Affected versionversion=9739f5f93b7806a684713ba42e6ed2d1df7c8100 <91c6f25075a8f8fbd7316d73e1edf281a94f78df
  4. Affected versionversion=9739f5f93b7806a684713ba42e6ed2d1df7c8100 <b6e32ba6d32503440a3e3e16c8d0521cbb7e0c5d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.15; version=9739f5f93b7806a684713ba42e6ed2d1df7c8100 <7530c3595d1e23bc5938cbd44b7e8f33457fc71f; version=9739f5f93b7806a684713ba42e6ed2d1df7c8100 <91c6f25075a8f8fbd7316d73e1edf281a94f78df; version=9739f5f93b7806a684713ba42e6ed2d1df7c8100 <b6e32ba6d32503440a3e3e16c8d0521cbb7e0c5d

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/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 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

T1529System Shutdown/Reboot

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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