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Vulnerability · Published Jun 18, 2025 · Assigned by Linux

CVE-2022-50077apparmor: fix reference count leak in aa_pivotroot()

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 90.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix reference count leak in aa_pivotroot() The aa_pivotroot() function has a reference counting bug in a specific path. When aa_replace_current_label() returns on success, the function forgets to decrement the reference count of “target”, which is increased earlier by build_pivotroot(), causing a reference leak. Fix it by decreasing the refcount of “target” in that path.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.0.2-1DEBIAN-CVE-2022-50077
Debian:13linux6.0.2-1DEBIAN-CVE-2022-50077
Debian:14linux6.0.2-1DEBIAN-CVE-2022-50077
Ubuntu:22.04:LTSlinux5.15.0-53.59UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-aws5.15.0-1023.27UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure5.15.0-1023.29UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1024.30.1UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-gcp5.15.0-1022.29UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-gke5.15.0-1020.25UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1008.12UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-ibm5.15.0-1018.21UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1018.23UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-kvm5.15.0-1021.26UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-53.59UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1015.15UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-oracle5.15.0-1022.28UBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-raspi5.15.0-1018.20UBUNTU-CVE-2022-50077
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50077
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50077
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-50077
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-50077

Affected products (as reported)

VendorProductVersions
Linux Linux 2ea3ffb7782a84da33a8382f13ebd016da50079b – before d53194707d2a1851be027cd74266b96ceff799d32ea3ffb7782a84da33a8382f13ebd016da50079b – before f4d5c7796571624e3f380b447ada52834270a2872ea3ffb7782a84da33a8382f13ebd016da50079b – before ef6fb6f0d0d8440595b45a7e53c6162c737177f42ea3ffb7782a84da33a8382f13ebd016da50079b – before 2ceeb3296e9dde1d5772348046affcefdea605e22ea3ffb7782a84da33a8382f13ebd016da50079b – before 64103ea357734b82384c925cba4758fdb909be0c2ea3ffb7782a84da33a8382f13ebd016da50079b – before 3ca40ad7afae144169a43988ef1a3f16182faf0a2ea3ffb7782a84da33a8382f13ebd016da50079b – before 11c3627ec6b56c1525013f336f41b79a983b4d46
Linux Linux 4.14

References