CVE-2026-80756Hinoki check available

Kernel NULL dereference via failed initial policy load

Published Sep 3, 2026 · Updated Sep 3, 2026

NULL pointer dereference in SELinux in affected Linux kernel releases allows local users to fault the kernel during an initial policy load. When sel_make_policy_nodes() fails on the first load, sel_write_load() calls selinux_policy_cancel(), which dereferences the NULL state->policy. Reachability requires local access able to write a policy to /sys/fs/selinux/load; the record does not state whether the host recovers or crashes.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

NULL pointer dereference in SELinux in affected Linux kernel releases allows local users to fault the kernel during an initial policy load. When sel_make_policy_nodes() fails on the first load, sel_write_load() calls selinux_policy_cancel(), which dereferences the NULL state->policy. Reachability requires local access able to write a policy to /sys/fs/selinux/load; the record does not state whether the host recovers or crashes.

The record

CVE
CVE-2026-80756
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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?

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  1. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1059789ae9f99cbbe3a78e361e9c0976beb5958b
  2. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1acc317d67a755a45e32419a15d70e403fa43f0e
  3. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1b4ff94ae7c580c880291519fb0e3e2bd075beef
  4. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <219c96de5d9b6b4af7e8576ad897b774cc3ee9a7
  5. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <2d29983104f06f5b0babcd5a25a0f0408272cd27
  6. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <a42932c6aa33d0aac683cacdf1ec7009b955ba5d
  7. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <a4f182f8715cb0819445f0850cd5436828f4bafc
  8. Affected versionversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e
  9. Affected versionversion=5.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1059789ae9f99cbbe3a78e361e9c0976beb5958b; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1acc317d67a755a45e32419a15d70e403fa43f0e; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <1b4ff94ae7c580c880291519fb0e3e2bd075beef; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <219c96de5d9b6b4af7e8576ad897b774cc3ee9a7; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <2d29983104f06f5b0babcd5a25a0f0408272cd27; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <a42932c6aa33d0aac683cacdf1ec7009b955ba5d; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <a4f182f8715cb0819445f0850cd5436828f4bafc; version=02a52c5c8c3b8cbad0f12009cde9f36dbefb6972 <e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e; version=5.10

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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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