Trending
CVE-2026-23411

CVE detail

CVE-2026-23411

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix race between freeing data and fs accessing it AppArmor was putting the reference to i_private data on its end after removing the original entry from the file system. However the inode can aand does live beyond that point and it is possible that some of the fs call back functions will be invoked after the reference has been put, which results in a race between freeing the data and accessing it through the fs. While the rawdata/loaddata is the most likely candidate to fail the race, as it has the fewest references. If properly crafted it might be possible to trigger a race for the other types stored in i_private. Fix this by moving the put of i_private referenced data to the correct place which is during inode eviction.

CVSS 7.8 · HighBuzz score 33.0

Buzz score

Why this CVE is surfacing

Buzz score total 33.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 23.0 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

23.0

9 evidence mentions in the snapshot

Diversity score

10.0

2 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

9 source links · newest first

CVE-2026-23411 apparmor: fix race between freeing data and fs accessing itMicrosoft MSRC
Information published.
vendormsrc.microsoft.comApr 26, 2026, 8:03 AM
https://git.kernel.org/stable/c/eecce026399917f6efa532c56bc7a3e9dd6ee68bgit.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/ae10787d955fb255d381e0d5589451dd72c614b1git.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/a92c5e5086a87d082696245a8607666da3d80554git.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/8e135b8aee5a06c52a4347a5a6d51223c6f36ba3git.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/667df93769c02ff581c77d2d8f162147e719c557git.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/3ddb961d2929bbb3204a2bba21b5d8153cd3f7ccgit.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/2a732ed26fbd048e7925d227af8cf9ea43fb5cc9git.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM
https://git.kernel.org/stable/c/13bc2772414d68e94e273dea013181a986948ddfgit.kernel.org
No excerpt available.
Patchgit.kernel.orgApr 1, 2026, 9:16 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-23411.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:o:linux:linux_kernelSearch this product on Shodan

Exact CVE query

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Metadata

Canonical fields

NVD status

Unavailable

Published

Apr 1, 2026

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Local. The attacker needs local access to the vulnerable system.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): Low. The attacker needs basic user-level privileges.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses