How severe is CVE-2026-47326?

CVE-2026-47326 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-47326 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-47326?

CVE-2026-47326 primarily affects Canonical Ubuntu Linux. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-47326?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-47326 have an EU (EUVD) identifier?

Yes. CVE-2026-47326 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32981.

When was CVE-2026-47326 published?

CVE-2026-47326 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-47326

CVE-2026-47326 is a medium-severity vulnerability in Canonical Ubuntu Linux with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32981
Weakness: CWE-401
Affected product: Canonical Ubuntu Linux
Published: 2026-05-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-47326?: 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.
How severe is CVE-2026-47326?: CVE-2026-47326 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-47326 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-47326?: CVE-2026-47326 primarily affects Canonical Ubuntu Linux. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-47326?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-47326 have an EU (EUVD) identifier?: Yes. CVE-2026-47326 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32981.
When was CVE-2026-47326 published?: CVE-2026-47326 was published on 2026-05-28 and last updated on 2026-06-17.

References

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

Affected products (3)

cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:25.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:26.04:*:*:*:*:*:*:*

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