CVE-2019-18814: linux linux_kernel Use After Free
Vulnerability summary
CVE-2019-18814 is a critical (CVSS 9.8) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 2.50% chance of exploitation in the next 30 days, higher than 84.7% of scored vulnerabilities.
Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 10Timeline
- 07-11-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the Linux kernel through 5.3.9. There is a use-after-free when aa_label_parse() fails in aa_audit_rule_init() in security/apparmor/audit.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.50%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.50% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu8 products
- linuxAll versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-azureAll versions (No fix recorded) | < 5.0.0-1014.14~18.04.1
- linux-azure-edgeAll versions (No fix recorded)
- linux-gcp-edgeAll versions (No fix recorded)
Debian1 product
- linux< 5.7.6-1
Linux1 product
- linux_kernel≤ 5.3.9
3 vendors · 10 products
References
7 links- security.netapp.com/advisory/ntap-20191205-0001/X Refsource CONFIRM
