CVE-2026-47334: medium-severity vulnerability in Canonical Ubuntu Linux
Deadlock or kernel panic in Ubuntu Linux AppArmor notification handling
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.1%
exploitation probability
0.1%top 99% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Canonical · Ubuntu LinuxRelated CVEs — Canonical Ubuntu Linux
In the same product, most dangerous first.
CVE-2026-47331HIGHUse-after-free in Ubuntu Linux AppArmor notification handlingEPSS 0.2%CVE-2026-47333HIGHOut-of-bounds read in Ubuntu Linux AppArmor notification handlingEPSS 0.2%CVE-2025-13350HIGHUse-after-free of orphaned AF_UNIX in Ubuntu builds of Linux kernelEPSS 0.2%CVE-2026-47332MEDIUMOut-of-bounds read in Ubuntu Linux AppArmor notification handlingEPSS 0.1%CVE-2026-47335MEDIUMNULL pointer dereference in Ubuntu Linux AppArmor notification handlingEPSS 0.1%CVE-2026-47328MEDIUMInvalid pointer deallocation in Ubuntu Linux AppArmor notification handlingEPSS 0.1%