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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade kernelUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-abi-stablelists | Oct 24, 2025 | Oct 23, 2025 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-azureUpgrade linux-gcpUpgrade linux-hweUpgrade linux-bluefieldUpgrade linux-intel-iotgUpgrade linux-azure-4.15Upgrade linux-aws-5.4Upgrade linux-aws-5.15Upgrade linux-fipsUpgrade linux-gcp-5.15Upgrade linux-hwe-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-raspiUpgrade linux-ibmUpgrade linux-aws-fipsUpgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-oracleUpgrade linux-oracle-5.15Upgrade linux-gcp-4.15Upgrade linux-azure-5.15Upgrade linux-kvmUpgrade linux-realtimeUpgrade linux-nvidiaUpgrade linux-iotUpgrade linux-riscv-5.15Upgrade linux-lowlatencyUpgrade linux-awsUpgrade linux-oracle-5.4Upgrade linux-azure-fipsUpgrade linux-gkeopUpgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linux-aws-hweUpgrade linux-gcp-fipsUpgrade linux-gkeUpgrade linux | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
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