In the Linux kernel, the following vulnerability has been resolved:
iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails
arm_smmu_rpm_get() invokes pm_runtime_get_sync(), which increases the refcount of the "smmu" even though the return value is less than 0.
The reference counting issue happens in some error handling paths of arm_smmu_rpm_get() in its caller functions. When arm_smmu_rpm_get() fails, the caller functions forget to decrease the refcount of "smmu" increased by arm_smmu_rpm_get(), causing a refcount leak.
Fix this issue by calling pm_runtime_resume_and_get() instead of pm_runtime_get_sync() in arm_smmu_rpm_get(), which can keep the refcount balanced in case of failure.
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernelUpgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-livepatch-5.10.59-52.142Upgrade python-perfUpgrade kernel-toolsUpgrade kernel-headersUpgrade python-perf-debuginfo | Dec 12, 2024 | May 21, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-raspiUpgrade linux-bluefieldUpgrade linux-fipsUpgrade linux-awsUpgrade linux-raspi-5.4Upgrade linux-aws-5.4Upgrade linux-kvmUpgrade linux-oracle-5.4Upgrade linux-azure-fipsUpgrade linux-ibmUpgrade linux-azure-fde-5.15Upgrade linux-oracleUpgrade linux-gcp-fipsUpgrade linux-azure-5.4Upgrade linux-gcp-5.4Upgrade linux-aws-fipsUpgrade linux-gkeopUpgrade linux-gcpUpgrade linux-hwe-5.4Upgrade linux | Nov 19, 2024 | May 21, 2024 |
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