CVE-2026-47335: CWE-476 NULL pointer dereference in Canonical Ubuntu Linux
Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel panic.
AI Analysis
Technical Summary
Ubuntu Linux version 6.8 contains a vulnerability identified as CVE-2026-47335, classified under CWE-476 (NULL pointer dereference). The issue arises in the handling of AppArmor notifications, where an unprivileged local user can trigger a NULL pointer dereference. This leads to a kernel panic, causing the system to crash and become unavailable. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low attack complexity, and no impact on confidentiality or integrity but high impact on availability. No vendor advisory or patch information is currently available.
Potential Impact
An unprivileged local user can exploit this vulnerability to cause a kernel panic, resulting in a denial of service by crashing the affected Ubuntu Linux 6.8 system. There is no indication of confidentiality or integrity compromise. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local user access to trusted individuals and consider monitoring for abnormal system crashes related to AppArmor notifications.
CVE-2026-47335: CWE-476 NULL pointer dereference in Canonical Ubuntu Linux
Description
Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor notifications. The bug can be triggered by an unprivileged local user. This can lead to a kernel panic.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Ubuntu Linux version 6.8 contains a vulnerability identified as CVE-2026-47335, classified under CWE-476 (NULL pointer dereference). The issue arises in the handling of AppArmor notifications, where an unprivileged local user can trigger a NULL pointer dereference. This leads to a kernel panic, causing the system to crash and become unavailable. The CVSS 3.1 base score is 5.5, reflecting a medium severity with local attack vector, low attack complexity, and no impact on confidentiality or integrity but high impact on availability. No vendor advisory or patch information is currently available.
Potential Impact
An unprivileged local user can exploit this vulnerability to cause a kernel panic, resulting in a denial of service by crashing the affected Ubuntu Linux 6.8 system. There is no indication of confidentiality or integrity compromise. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local user access to trusted individuals and consider monitoring for abnormal system crashes related to AppArmor notifications.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- canonical
- Date Reserved
- 2026-05-19T10:37:36.434Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a188e08e29bf47b501d682c
Added to database: 5/28/2026, 6:48:40 PM
Last enriched: 5/28/2026, 7:04:36 PM
Last updated: 5/29/2026, 1:04:47 PM
Views: 26
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