apparmor: fix race between freeing data and fs accessing it
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.13 and later | 5.10.253, 5.15.203, 6.1.169, 6.6.130, 6.12.77, 6.18.18, 6.19.8, 7.0 | Patch available | CNA |
- Linux VendorLinux Affected 4.13 and later Fixed in 5.10.253, 5.15.203, 6.1.169, 6.6.130, 6.12.77, 6.18.18, 6.19.8, 7.0 Patch available CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.13.1 to before 5.10.253; 5.11 to before 5.15.203; 5.16 to before 6.1.169; 6.2 to before 6.6.130; 6.7 to before 6.12.77; 6.13 to before 6.18.18; 6.19 to before 6.19.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.13:-:*:*:*:*:*:* | 4.13 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* | 7.0 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* | 7.0 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* | 7.0 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* | 7.0 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* | 7.0 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* | 7.0 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* | 7.0 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.13.1 to before 5.10.253; 5.11 to before 5.15.203; 5.16 to before 6.1.169; 6.2 to before 6.6.130; 6.7 to before 6.12.77; 6.13 to before 6.18.18; 6.19 to before 6.19.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.13:-:*:*:*:*:*:* Versions 4.13 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* Versions 7.0 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* Versions 7.0 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* Versions 7.0 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* Versions 7.0 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* Versions 7.0 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* Versions 7.0 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* Versions 7.0 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.253, 5.15.203, 6.1.169, 6.6.130, 6.12.77, 6.18.18, 6.19.8, 7.0
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-23411
- 2026-10-03 Alias added: GHSA-4g4x-f3f9-gpq4
- 2026-10-20 Affected versions changed · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/a92c5e5086a87d082696245a8607666da3d80554
- https://git.kernel.org/stable/c/667df93769c02ff581c77d2d8f162147e719c557
- https://git.kernel.org/stable/c/3ddb961d2929bbb3204a2bba21b5d8153cd3f7cc
- https://git.kernel.org/stable/c/ae10787d955fb255d381e0d5589451dd72c614b1
- https://git.kernel.org/stable/c/eecce026399917f6efa532c56bc7a3e9dd6ee68b
- https://git.kernel.org/stable/c/13bc2772414d68e94e273dea013181a986948ddf
- https://git.kernel.org/stable/c/2a732ed26fbd048e7925d227af8cf9ea43fb5cc9
- https://git.kernel.org/stable/c/8e135b8aee5a06c52a4347a5a6d51223c6f36ba3
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Sources
- CVE-2026-23411 · CVE Program
- CVE-2026-23411 · NVD
- FIRST EPSS
- GHSA-4g4x-f3f9-gpq4 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-23411 · Red Hat security data · CC BY 4.0
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