CVE-2026-80565Hinoki check available

Local privilege escalation via QCE unregister loop

Published Aug 26, 2026 · Updated Aug 27, 2026

Use-after-free in the Linux qce crypto driver allows local users to disclose or alter kernel memory after algorithm registration fails. In devm_qce_register_algs, the failure loop reuses the failed operation's unregister callback instead of selecting each previously registered algorithm, leaving templates tied to a freed qce_device. Reachability requires QCE initialization at boot or qcrypto module loading; subsequent crypto use can trigger disclosure, arbitrary writes, code execution, or a kernel crash, panic, or hang.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in the Linux qce crypto driver allows local users to disclose or alter kernel memory after algorithm registration fails. In devm_qce_register_algs, the failure loop reuses the failed operation's unregister callback instead of selecting each previously registered algorithm, leaving templates tied to a freed qce_device. Reachability requires QCE initialization at boot or qcrypto module loading; subsequent crypto use can trigger disclosure, arbitrary writes, code execution, or a kernel crash, panic, or hang.

The record

CVE
CVE-2026-80565
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-763, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 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=4007883dc7df1dbaeb461b850e0b1b27c057affc
  2. Affected versionversion=5.10.235 <5.10.266
  3. Affected versionversion=5.15.179 <5.15.217
  4. Affected versionversion=5.4.291 <5.5
  5. Affected versionversion=5d5b673b4dd260226b2202f66a920566c27051f3 <1ece8e16c085e8cd60ecbdb641269aaa53d31da4
  6. Affected versionversion=6.1.129 <6.1.184
  7. Affected versionversion=6.12.14 <6.12.105
  8. Affected versionversion=6.13.3 <6.14
  9. Affected versionversion=6.14
  10. Affected versionversion=6.6.78 <6.6.153
  11. Affected versionversion=76e6d50fa5a2fb466edcc8b513d7aad372312c2a <c7dc487aade12c692add3221673c9bdf32dc24f5
  12. Affected versionversion=8c735ef894dfcca8d0a1cc554f83a82a70fd5b76
  13. Affected versionversion=9e403fea74ecbe6b4a4321f13bd4bc929382908d <dbca8b798caf47fb2799a26dd09c9ad66305883d
  14. Affected versionversion=e80cf84b608725303113d6fe98bb727bf7b7a40d <4e88b4fda48282f3fd504b4d4f5d2d4f996b76ce
  15. Affected versionversion=e80cf84b608725303113d6fe98bb727bf7b7a40d <9c75402286409f5e1a75e4a445555c84066f89db
  16. Affected versionversion=e80cf84b608725303113d6fe98bb727bf7b7a40d <a134e4b8102c077286818ee112b9f925db613d4c
  17. Affected versionversion=e914b2f795b6995bb0e7db45caa4a912dca09e65 <de52c713d21806b93b00a6074056b57aec4f8919
  18. Affected versionversion=f52f00efd8c0088992ac07ef46af6096e4f0e52e <fef187c6194d67395182d58169dd14ba631f1b41

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4007883dc7df1dbaeb461b850e0b1b27c057affc; version=5.10.235 <5.10.266; version=5.15.179 <5.15.217; version=5.4.291 <5.5; version=5d5b673b4dd260226b2202f66a920566c27051f3 <1ece8e16c085e8cd60ecbdb641269aaa53d31da4; version=6.1.129 <6.1.184; version=6.12.14 <6.12.105; version=6.13.3 <6.14; version=6.14; version=6.6.78 <6.6.153; version=76e6d50fa5a2fb466edcc8b513d7aad372312c2a <c7dc487aade12c692add3221673c9bdf32dc24f5; version=8c735ef894dfcca8d0a1cc554f83a82a70fd5b76; version=9e403fea74ecbe6b4a4321f13bd4bc929382908d <dbca8b798caf47fb2799a26dd09c9ad66305883d; version=e80cf84b608725303113d6fe98bb727bf7b7a40d <4e88b4fda48282f3fd504b4d4f5d2d4f996b76ce; version=e80cf84b608725303113d6fe98bb727bf7b7a40d <9c75402286409f5e1a75e4a445555c84066f89db; version=e80cf84b608725303113d6fe98bb727bf7b7a40d <a134e4b8102c077286818ee112b9f925db613d4c; version=e914b2f795b6995bb0e7db45caa4a912dca09e65 <de52c713d21806b93b00a6074056b57aec4f8919; version=f52f00efd8c0088992ac07ef46af6096e4f0e52e <fef187c6194d67395182d58169dd14ba631f1b41

Published CVSS scores

7.8Linux kernel security teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

CWE-763Release of Invalid Pointer or Reference
T1068Exploitation for Privilege Escalation

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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