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Vulnerability record · CVE-2026-23411 · published 1 April 2026

CVE-2026-23411: Linux kernel race condition vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.15% · top 96.9% CWE-362 · Race condition
7.8CVSS 3.1 base score
0.15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/13bc2772414d68e94e273dea013181a986948ddf Patch
https://git.kernel.org/stable/c/2a732ed26fbd048e7925d227af8cf9ea43fb5cc9 Patch
https://git.kernel.org/stable/c/3ddb961d2929bbb3204a2bba21b5d8153cd3f7cc Patch
https://git.kernel.org/stable/c/667df93769c02ff581c77d2d8f162147e719c557 Patch
https://git.kernel.org/stable/c/8e135b8aee5a06c52a4347a5a6d51223c6f36ba3 Patch
https://git.kernel.org/stable/c/a92c5e5086a87d082696245a8607666da3d80554 Patch
https://git.kernel.org/stable/c/ae10787d955fb255d381e0d5589451dd72c614b1 Patch
https://git.kernel.org/stable/c/eecce026399917f6efa532c56bc7a3e9dd6ee68b Patch

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Source: NIST National Vulnerability Database (record CVE-2026-23411), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.