VulnerabilityPublished 28 May 2026Updated 8 Oct 2026

CVE-2026-47327: Linux hwe edge · Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer

Affects Linux kernelSource GCVE Database

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Authoritative record:CVE-2026-47327· Low 3.3

Not known to be exploited · CVSS 3.3 Low · fixed in 6.8.0-1057.60~22.04.1 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score

3.3Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 6.8.0-1057.60~22.04.1, 6.8.0-1059.65~22.04.1, 6.8.0-1058.65~22.04.1 +53

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
Ubuntu 26.04 LTSlinux`pkg:deb/ubuntu/linux?arch=source&distro=resolute`Other threats	Affected <7.0.0-22.22	Fixed in 7.0.0-22.22
Ubuntu 26.04 LTSlinux-aws`pkg:deb/ubuntu/linux-aws?arch=source&distro=resolute`Other threats	Affected <7.0.0-1006.6	Fixed in 7.0.0-1006.6
Ubuntu 26.04 LTSlinux-azure`pkg:deb/ubuntu/linux-azure?arch=source&distro=resolute`Other threats	Affected <7.0.0-1007.7	Fixed in 7.0.0-1007.7
Ubuntu 26.04 LTSlinux-azure-fde`pkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resolute`Other threats	Affected <7.0.0-1006.6	Fixed in 7.0.0-1006.6
Ubuntu 26.04 LTSlinux-gcp`pkg:deb/ubuntu/linux-gcp?arch=source&distro=resolute`Other threats	Affected <7.0.0-1005.5	Fixed in 7.0.0-1005.5
Ubuntu 26.04 LTSlinux-ibm`pkg:deb/ubuntu/linux-ibm?arch=source&distro=resolute`Other threats	Affected <7.0.0-1007.7	Fixed in 7.0.0-1007.7

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A vendor-provided patch is available and should be applied to affected Ubuntu Linux kernel versions 6.8, 6.17, and 7.0. Users should update to the fixed kernel versions as per Ubuntu Security Notice USN-8370-1. No additional mitigation is required beyond applying the official fix.

Description

Ubuntu Linux kernel versions 6.8, 6.17, and 7.0 include SAUCE patches that introduce a possible NULL pointer dereference vulnerability in the handling of AppArmor notifications. This flaw can be triggered by an unprivileged local user and may cause a kernel oops, resulting in a denial of service. The vulnerability is assigned CVE-2026-47327 and has a medium severity rating with a CVSS score of 3.3. A patch is available from the vendor to address this issue.

Impact

An unprivileged local attacker can trigger a NULL pointer dereference in the kernel via AppArmor notifications, causing a kernel oops. This results in a denial of service by crashing the kernel, but does not lead to confidentiality or integrity loss. There is no indication of remote exploitability or privilege escalation from this specific flaw.

Summary

CVE-2026-47327 is a vulnerability in Ubuntu Linux kernel versions 6.8, 6.17, and 7.0 where a NULL pointer dereference can occur during the processing of AppArmor notifications. This flaw can be exploited by an unprivileged local user to cause a kernel oops, effectively leading to a denial of service condition. The issue is part of a set of vulnerabilities fixed in the Linux kernel as detailed in the Ubuntu Security Notice USN-8370-1. The vulnerability affects specific kernel builds listed and has been patched by Canonical.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Oct 2026, 17:09 UTC

Technical details

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