dbcve.org
Ubuntu LinuxOperating system · Canonical

CVE-2026-47334

MEDIUM · 5.5 CVSS v3.1 Published 2026-05-28
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock in notification handling code. The bug can be triggered by an unprivileged local user and can result in kernel panic or deadlock.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Ubuntu LinuxOperating system
Affected:= 24.04= 25.10= 26.04

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch git.launchpad.net →
Recommended fix Moderate confidence

Upgrade to a newer Ubuntu kernel version that includes the commit f0e73aec23d13a9877fba096b1c2fd19f66e5313 (check Ubuntu Security Notices for availability)

  1. Identify the current running kernel version using 'uname -r'
  2. Check if Ubuntu kernel security notices or hardware enablement (HWE) updates are available for your Ubuntu version
  3. For Ubuntu 24.04 (Noble): Apply the Ubuntu kernel patch via 'sudo apt update && sudo apt install linux-image-$(uname -r)' or wait for the next HWE kernel upload that includes the fix
  4. For Ubuntu 25.10 (Plucky): Apply the Ubuntu kernel patch via 'sudo apt update && sudo apt install linux-image-$(uname -r)'
  5. For Ubuntu 26.04: Apply the Ubuntu kernel patch via 'sudo apt update && sudo apt install linux-image-$(uname -r)'
  6. Reboot the system to load the patched kernel
  7. Verify the fix is applied by checking the kernel version matches the patched release
Caveat Kernel updates may require system reboot; ensure compatibility with existing system configurations and third-party kernel modules

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-47334 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data