Medium severity · published May 28, 2026
CVE-2026-47326
Memory leak in Ubuntu Linux AppArmor large notification response allocation
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a memory leak in the handling of big responses to AppArmor notifications. The bug can be triggered by an unprivileged local user. The memory leak could lead to resource exhaustion.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UL
Ubuntu Linux · Canonical
6.8.0 before 6.8.0-124.124; 6.17.0 before 6.17.0-35.35; 7.0.0 before 7.0.0-22.22 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47326
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47326
Patch
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=8d858ecb7e2e216ca2987302a04c266f2355fefe
More from Ubuntu Linux
9.8
CVE-2020-11651
SaltStack Salt Authentication Bypass Vulnerability
9.8
CVE-2020-7247
OpenSMTPD Remote Code Execution Vulnerability
9.8
CVE-2019-11043
Underflow in PHP-FPM can lead to RCE
9.8
CVE-2019-16928
Exim Out-of-bounds Write Vulnerability
9.8
CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation