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HIGHCVE-2026-23411Published Modified CNA Linux

CVE-2026-23411: apparmor: fix race between freeing data and fs accessing it

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.

Metrics

CVSS v3.1
7.8
Severity
HIGH
Fixed in
0
Affected Products
2

Fix available

013bc2772414d68e94e273dea013181a986948ddf2a732ed26fbd048e7925d227af8cf9ea43fb5cc93ddb961d2929bbb3204a2bba21b5d8153cd3f7cc5.10.2535.15.2036.1.1696.6.1306.12.776.18.186.19.8667df93769c02ff581c77d2d8f162147e719c5577.08e135b8aee5a06c52a4347a5a6d51223c6f36ba3a92c5e5086a87d082696245a8607666da3d80554ae10787d955fb255d381e0d5589451dd72c614b1eecce026399917f6efa532c56bc7a3e9dd6ee68b
Affected packages
  • Linux / Linux
    < a92c5e5086a87d082696245a8607666da3d80554 (from c961ee5f21b202dea60b63eeef945730d92e46a6) · < 667df93769c02ff581c77d2d8f162147e719c557 (from c961ee5f21b202dea60b63eeef945730d92e46a6) · < 3ddb961d2929bbb3204a2bba21b5d8153cd3f7cc (from c961ee5f21b202dea60b63eeef945730d92e46a6) · < ae10787d955fb255d381e0d5589451dd72c614b1 (from c961ee5f21b202dea60b63eeef945730d92e46a6) · < eecce026399917f6efa532c56bc7a3e9dd6ee68b (from c961ee5f21b202dea60b63eeef945730d92e46a6) · < 13bc2772414d68e94e273dea013181a986948ddf (from c961ee5f21b202dea60b63eeef945730d92e46a6)
  • Linux / Linux
    4.13
    Fixed in 0, 5.10.253, 5.15.203, 6.1.169, 6.6.130, 6.12.77, 6.18.18, 6.19.8, 7.0
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H