CVE-2026-80928Hinoki check available

Local kernel memory fault via credential race

Published Sep 11, 2026 · Updated Sep 11, 2026

Use-after-free in Linux kernel Smack allows local users to trigger a kernel memory-safety fault through a credential-access race. smack_file_send_sigiotask() reads a non-current task's mutable cred pointer before obtaining its objective real_cred, allowing replacement to free the first struct cred during use. Reaching the race requires Smack's signal-delivery hook and concurrent credential replacement; the published test demonstrates a KASAN report, not code execution or privilege escalation.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
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 Linux kernel Smack allows local users to trigger a kernel memory-safety fault through a credential-access race. smack_file_send_sigiotask() reads a non-current task's mutable cred pointer before obtaining its objective real_cred, allowing replacement to free the first struct cred during use. Reaching the race requires Smack's signal-delivery hook and concurrent credential replacement; the published test demonstrates a KASAN report, not code execution or privilege escalation.

The record

CVE
CVE-2026-80928
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 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=0 <6.12.109
  2. Affected versionversion=0 <6.18.50
  3. Affected versionversion=0 <7.2.4
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b5bcf3adfa27279da4401ab8f1e1a706601a92be
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b791401bf389a1546a830d2b381ca60fe94c7870
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ed64aa505875a3b4defd504ee8e59e1949246a62
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fedc88e38ce979a720cd2de042578cb5df3dc8de

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.109; version=0 <6.18.50; version=0 <7.2.4; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b5bcf3adfa27279da4401ab8f1e1a706601a92be; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b791401bf389a1546a830d2b381ca60fe94c7870; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ed64aa505875a3b4defd504ee8e59e1949246a62; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fedc88e38ce979a720cd2de042578cb5df3dc8de

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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