CVE-2026-63827: apparmor: fix use-after-free in rawdata dedup loop
apparmor: fix use-after-free in rawdata dedup loop
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.150.1-1 - Upgrade
Upgrade
Linux kernel (AppArmor rawdata dedup loop use-after-free)to a version that resolves this vulnerability.Patch apparmor: fix use-after-free in rawdata dedup loop - Compensating control
Until the kernel patch is applied, run an AppArmor-focused smoke test using the provided command to detect issues: stress-ng --apparmor 1 --klog-check --timeout 60s.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-63827?
CVE-2026-63827 has a high severity rating of 7.8 according to the CVSS version 3.1.
What type of vulnerability is identified by CVE-2026-63827?
CVE-2026-63827 is categorized as a use-after-free vulnerability.
How do I fix CVE-2026-63827?
To fix CVE-2026-63827, update your Linux kernel to the latest patched version provided by your distribution.
What impact does CVE-2026-63827 have on Linux systems?
CVE-2026-63827 could potentially allow an attacker to execute arbitrary code or cause a denial of service.
When was CVE-2026-63827 published?
CVE-2026-63827 was published on July 19, 2026.