In the Linux kernel, the following vulnerability has been resolved:
ksmbd: Fix refcount leak when invalid session is found on session lookup
When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | Feb 11, 2026 | Feb 11, 2026 |
| Ubuntu | — | Upgrade linux-image-5.15.0-1107-nvidia-lowlatencyUpgrade linux-image-5.15.0-1109-oracleUpgrade linux-image-5.15.0-1106-ibmUpgrade linux-image-5.15.0-1112-gcp-fipsUpgrade linux-image-6.8.0-1054-azureUpgrade linux-image-6.8.0-1050-gkeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-ibm-5.15Upgrade linux-image-6.17.0-1012-aws-64kUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-1050-gke-64kUpgrade linux-image-6.8.0-1029-xilinxUpgrade linux-image-generic-5.15Upgrade linux-image-oem-20.04bUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-5.15.0-1108-gkeUpgrade linux-image-oracle-6.8Upgrade linux-image-6.17.0-1013-azureUpgrade linux-image-6.17.0-22-generic-64kUpgrade linux-image-oracle-5.15Upgrade linux-image-gcp-fipsUpgrade linux-image-xilinx-6.8Upgrade linux-image-6.8.0-1052-aws-64kUpgrade linux-image-6.8.0-110-lowlatencyUpgrade linux-image-generic-6.17Upgrade linux-image-lowlatency-6.8Upgrade linux-image-oem-22.04dUpgrade linux-image-azure-lts-22.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-gke-64kUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-azure-6.17Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gke-5.15Upgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-1104-kvmUpgrade linux-image-aws-6.8Upgrade linux-image-raspi-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-azure-5.15Upgrade linux-image-oracle-6.17Upgrade linux-image-oem-22.04aUpgrade linux-image-aws-fips-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1037-gkeopUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-5.15.0-186-genericUpgrade linux-image-6.17.0-1012-gcpUpgrade linux-image-6.17.0-22-genericUpgrade linux-image-aws-64k-5.15Upgrade linux-image-raspiUpgrade linux-image-5.15.0-1104-intel-iot-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-5.15.0-1117-azure-fdeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-5.15.0-1117-azure-fipsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-generic-64k-6.17Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-azure-fde-5.15Upgrade linux-image-fipsUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-ibmUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-oem-6.17Upgrade linux-image-6.8.0-1052-awsUpgrade linux-image-ibm-classicUpgrade linux-image-raspi-5.15Upgrade linux-image-oem-22.04cUpgrade linux-image-azure-fdeUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-110-generic-64kUpgrade linux-image-gcp-64k-6.17Upgrade linux-image-6.8.0-1049-oracleUpgrade linux-image-6.8.0-1051-nvidia-lowlatencyUpgrade linux-image-6.8.0-110-genericUpgrade linux-image-nvidia-5.15Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.17.0-1014-raspiUpgrade linux-image-kvmUpgrade linux-image-6.8.0-1051-nvidia-lowlatency-64kUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-5.15.0-1053-nvidia-tegra-igx-rtUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-generic-64kUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-tegraUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-generic-64k-6.8Upgrade linux-image-realtime-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-realtime-6.17Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-aws-fips-5.15Upgrade linux-image-5.15.0-1064-nvidia-tegraUpgrade linux-image-5.15.0-186-generic-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.17.0-1011-oracle-64kUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-6.8.0-1052-raspiUpgrade linux-image-5.15.0-186-fipsUpgrade linux-image-5.15.0-186-generic-lpaeUpgrade linux-image-virtual-6.8Upgrade linux-image-awsUpgrade linux-image-6.8.1-1047-realtimeUpgrade linux-image-aws-64k-6.17Upgrade linux-image-azure-lts-24.04Upgrade linux-image-azureUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-184-lowlatencyUpgrade linux-image-6.8.0-2042-raspi-realtimeUpgrade linux-image-raspi-6.17Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-1022-nvidia-tegra-rtUpgrade linux-image-gkeUpgrade linux-image-generic-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-1054-azure-fipsUpgrade linux-image-6.8.0-1052-aws-fipsUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-oracleUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-aws-6.17Upgrade linux-image-virtual-6.17Upgrade linux-image-azure-fips-5.15Upgrade linux-image-5.15.0-184-lowlatency-64kUpgrade linux-image-intel-iotgUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-generic-lpaeUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-6.8.0-110-fipsUpgrade linux-image-6.8.0-1054-gcp-fipsUpgrade linux-image-5.15.0-1112-gcpUpgrade linux-image-5.15.0-1064-nvidia-tegra-rtUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04cUpgrade linux-image-oem-24.04aUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-intelUpgrade linux-image-xilinxUpgrade linux-image-oem-24.04dUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-5.15.0-1107-nvidiaUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-5.15.0-1111-realtimeUpgrade linux-image-realtimeUpgrade linux-image-oem-20.04Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-gcp-6.8Upgrade linux-image-6.17.0-1020-oemUpgrade linux-image-6.17.0-1012-gcp-64kUpgrade linux-image-5.15.0-1107-intel-iotgUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-oem-24.04Upgrade linux-image-genericUpgrade linux-image-5.15.0-1112-aws-64kUpgrade linux-image-fips-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.17.0-1012-awsUpgrade linux-image-5.15.0-1112-aws-fipsUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-6.8.0-1054-gcp-64kUpgrade linux-image-virtualUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-virtual-5.15Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-6.8.0-1059-azureUpgrade linux-image-gcpUpgrade linux-image-5.15.0-1053-nvidia-tegra-igxUpgrade linux-image-oem-20.04dUpgrade linux-image-gcp-6.17Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-1051-nvidiaUpgrade linux-image-6.8.0-1051-ibmUpgrade linux-image-6.8.0-1049-oracle-64kUpgrade linux-image-6.8.0-1022-nvidia-tegraUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.15.0-1112-awsUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.8.0-1054-gcpUpgrade linux-image-5.15.0-1095-gkeopUpgrade linux-image-fips-5.15Upgrade linux-image-5.15.0-1117-azureUpgrade linux-image-aws-64k-6.8Upgrade linux-image-5.15.0-1106-raspiUpgrade linux-image-lowlatency-64kUpgrade linux-image-gcp-5.15Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-5.15Upgrade linux-image-kvm-5.15Upgrade linux-image-gkeopUpgrade linux-image-azure-fips-6.8Upgrade linux-image-azure-cvmUpgrade linux-image-azure-6.8Upgrade linux-image-aws-lts-22.04Upgrade linux-image-6.8.0-110-lowlatency-64kUpgrade linux-image-6.8.0-1051-nvidia-64kUpgrade linux-image-oem-22.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-5.15.0-1075-xilinx-zynqmpUpgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-6.17.0-1011-oracleUpgrade linux-image-6.17.0-1010-realtimeUpgrade linux-image-oem-22.04bUpgrade linux-image-gkeop-6.8 | Apr 17, 2026 | Jan 23, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jan 23, 2026 |
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