7.8

CVE-2026-23411: linux Race Condition

CVSS: 7.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-23411DEBIAN-CVE-2026-23411
Published 01-04-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-23411 is a high (CVSS 7.8) Race Condition vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 15
SUSE-SU-2026:21834-1SUSE-SU-2026:2195-1SUSE-SU-2026:2238-1USN-8098-10USN-8152-1USN-8163-1

Timeline

  1. 01-04-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

0.00 pp

From 0.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu155 products
  • linux< 4.15.0-249.261 | < 5.4.0-227.247 | < 5.15.0-173.183 | < 6.8.0-106.106 | < 6.17.0-19.19
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1191.204 | < 5.4.0-1156.166 | < 5.15.0-1103.110 | < 6.8.0-1050.53 | < 6.17.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < a92c5e5086a87d082696245a8607666da3d80554 | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < 667df93769c02ff581c77d2d8f162147e719c557 | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < 3ddb961d2929bbb3204a2bba21b5d8153cd3f7cc | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < ae10787d955fb255d381e0d5589451dd72c614b1 | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < eecce026399917f6efa532c56bc7a3e9dd6ee68b | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < 13bc2772414d68e94e273dea013181a986948ddf | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < 2a732ed26fbd048e7925d227af8cf9ea43fb5cc9 | ≥ c961ee5f21b202dea60b63eeef945730d92e46a6, < 8e135b8aee5a06c52a4347a5a6d51223c6f36ba3 | 4.13
  • linux_kernel≥ 4.13.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.169 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.77 | ≥ 6.13, < 6.18.18 | ≥ 6.19, < 6.19.8 | 4.13 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.164-1 | < 6.12.74-2 | < 6.19.6-2

3 vendors · 158 products

References

28 links
Show all 28 references