Vulnerability

CVE-2026-47326

Medium· 5.5CVSS5.5EPSS0%

.rules3/5

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.

Threat signal

55/100

Elevated

Severity

medium

CVSS

5.5

EPSS

Active

CVSS

v3.1via NVDOpen in FIRST calculator →

5.5/ 10MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLocalRequires local access — shell, console, or local app.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredLowStandard user privileges sufficient.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactNoneNo confidentiality impact.
Integrity ImpactNoneNo integrity impact.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.02%

probability of exploitation in next 30 days

higher than 6% of all CVEs

3-day trend↑ 0pp

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2026-47326. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCDefer

No exploitation, limited impact or prevalence

exploitation: none
automatable: no
impact: partial
mission: support

Lifecycle

2026-05-28Published
2026-06-02Vendor advisory · ubuntuUSN-8370-1 — Linux kernel vulnerabilities
2026-06-02Vendor advisory · ubuntuUSN-8371-1 — Linux kernel vulnerabilities
2026-06-02Vendor advisory · ubuntuUSN-8373-1 — Linux kernel vulnerabilities
2026-06-02Vendor advisory · ubuntuUSN-8374-1 — Linux kernel vulnerabilities
2026-06-04Vendor advisory · ubuntuUSN-8393-1 — Linux kernel (Azure FIPS) vulnerabilities
2026-06-09Last modified1 source

Entity graph

6 nodes · 5 edges · click to pivot

CVEActorVendor advisoryIOCNews

Vendor advisories

References

https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=8d858ecb7e2e216ca2987302a04c266f2355fefe

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.