CVE-2026-47328 | BDVDB-2026-336390 Detail

CanonicalUbuntu Linux

Description#

Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact high. Attack vector: local.

Weaknesses#

CWE-590 Free of memory not on the heap

References#

https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=7f3c4902c39432ce7ea0d384cb70eba282247fac

Exploit#

No public exploit known

History#

Version 12026-05-28Record published in the CVE List.

Published

Published: 2026-05-28
Last modified: 2026-05-28

Vendor information

Vendor: Canonical
Product: Ubuntu Linux

All Canonical vulnerabilities

Score

6.1 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 0.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 6.8.0 and < 6.8.0-124.124
Fixed
6.8.0-124.124
Vulnerable
>= 6.17.0 and < 6.17.0-35.35
Fixed
6.17.0-35.35
Vulnerable
>= 7.0.0 and < 7.0.0-22.22
Fixed
7.0.0-22.22

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.1 Medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	Low
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).