CVE-2026-80619

Use-after-free via released AppArmor load data

Published Aug 28, 2026 · Updated Aug 28, 2026

Use-after-free in Linux kernel AppArmor allows local users to trigger invalid memory access while replacing security profiles. aa_replace_profiles calls aa_put_loaddata on udata and then reads udata->size even though the reference drop can free that object. The path requires AppArmor policy-management permission; published material identifies the memory-safety fault but no further impact.

CVSS severityUnavailable
Unscored
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel AppArmor allows local users to trigger invalid memory access while replacing security profiles. aa_replace_profiles calls aa_put_loaddata on udata and then reads udata->size even though the reference drop can free that object. The path requires AppArmor policy-management permission; published material identifies the memory-safety fault but no further impact.

The record

CVE
CVE-2026-80619
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.11
  2. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <57b1bd4486d56254bb8af1a8f3d4445bbe505290
  3. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <5cba148eae6e8550c2889f5c0f94d72bed864321
  4. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <7b42f95813dc9ceb6bda35afcf914630909a19f9
  5. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <9d37dc6376e336dc4b4f39a7ad0d069aa70e9495
  6. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <9d8e47cbce7536f19c96e37d0685a042010187ee
  7. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <c0f3a3fda617beeec58708720304dd026a1a4dd7
  8. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <c44de0880b7ccc15c70a6352b5e107677d32b061
  9. Affected versionversion=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <dd5f1202f45a2dbe2c7dd10093f5c6bb2d8ac5bb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.11; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <57b1bd4486d56254bb8af1a8f3d4445bbe505290; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <5cba148eae6e8550c2889f5c0f94d72bed864321; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <7b42f95813dc9ceb6bda35afcf914630909a19f9; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <9d37dc6376e336dc4b4f39a7ad0d069aa70e9495; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <9d8e47cbce7536f19c96e37d0685a042010187ee; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <c0f3a3fda617beeec58708720304dd026a1a4dd7; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <c44de0880b7ccc15c70a6352b5e107677d32b061; version=5ac8c355ae0013d82b3a07b49aebeadfce9b6e52 <dd5f1202f45a2dbe2c7dd10093f5c6bb2d8ac5bb

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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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