In the Linux kernel, the following vulnerability has been resolved:
xfrm: fix refcount leak in __xfrm_policy_check()
The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks.
Fix it by decreasing the reference count of `pols[0]` 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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-develUpgrade perfUpgrade kernel-livepatch-4.14.294-220.533Upgrade kernel-tools-develUpgrade bpftoolUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.15.69-37.134Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.144-127.601Upgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade python-perfUpgrade kernel-headersUpgrade python-perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libs | Feb 3, 2026 | Feb 2, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 18, 2025 |
| Ubuntu | — | Upgrade linux-fipsUpgrade linux-bluefieldUpgrade linux-gcpUpgrade linux-awsUpgrade linux-ibmUpgrade linux-riscv-5.15Upgrade linux-gcp-4.15Upgrade linux-raspi-5.4Upgrade linux-aws-fipsUpgrade linux-gcp-5.4Upgrade linux-azure-fipsUpgrade linux-azure-5.15Upgrade linux-azure-4.15Upgrade linuxUpgrade linux-hwe-5.4Upgrade linux-ibm-5.4Upgrade linux-hweUpgrade linux-gkeopUpgrade linux-oracleUpgrade linux-intel-iotgUpgrade linux-gcp-fipsUpgrade linux-azure-5.4Upgrade linux-raspiUpgrade linux-oracle-5.15Upgrade linux-hwe-5.15Upgrade linux-gcp-5.15Upgrade linux-gkeUpgrade linux-iotUpgrade linux-azure-fdeUpgrade linux-aws-hweUpgrade linux-azureUpgrade linux-aws-5.4Upgrade linux-kvmUpgrade linux-oracle-5.4Upgrade linux-nvidiaUpgrade linux-aws-5.15Upgrade linux-lowlatencyUpgrade linux-realtimeUpgrade linux-intel-iotg-5.15Upgrade linux-lowlatency-hwe-5.15 | 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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