In the Linux kernel, the following vulnerability has been resolved:
smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()
Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored cifs code to change cifs_tcp_ses_lock for tc_lock around tc_count changes.
There was missing lock around tc_count increment inside smb2_find_smb_sess_tcon_unlocked().
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-modules-extraUpgrade kernel6.18-headersUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-develUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.18-tools-develUpgrade microvm-kernel6.18Upgrade kernel-livepatch-6.18.35-68.127Upgrade kernel6.18Upgrade python3-perf6.18-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade perf6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-modules-extra-commonUpgrade python3-perf6.18Upgrade bpftool6.18 | Aug 10, 2026 | Jul 19, 2026 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | Jul 22, 2026 | Jul 19, 2026 |
| Rocky_linux | — | Upgrade kernel-debuginfo-common-s390xUpgrade kernel-rt-debug-modules-extraUpgrade kernel-modulesUpgrade kernel-modules-coreUpgrade kernel-rt-debuginfoUpgrade kernel-devel-matchedUpgrade libperfUpgrade perf-debuginfoUpgrade libperf-debuginfoUpgrade kernel-uki-virt-addonsUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-uki-virtUpgrade kernel-rtUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libs-develUpgrade kernel-rt-debug-develUpgrade kernel-debug-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernelUpgrade kernel-rt-modules-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-zfcpdump-develUpgrade kernel-debug-develUpgrade python3-perfUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debugUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-zfcpdumpUpgrade kernel-rt-modules-extraUpgrade kernel-rt-coreUpgrade kernel-modules-extra-matchedUpgrade kernel-debug-coreUpgrade kernel-debug-modules-coreUpgrade rtlaUpgrade kernel-tools-libsUpgrade perfUpgrade kernel-rt-debug-coreUpgrade kernel-modules-extraUpgrade kernel-debuginfoUpgrade kernel-coreUpgrade kernel-toolsUpgrade rvUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-rt-modulesUpgrade kernel-debugUpgrade kernel-rt-debug-debuginfoUpgrade kernel-debug-uki-virtUpgrade kernel-tools-debuginfoUpgrade kernel-rt-develUpgrade kernel-debug-debuginfoUpgrade kernel-rt-debug-modulesUpgrade python3-perf-debuginfoUpgrade kernel-devel | Sep 7, 2026 | Sep 2, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1061-oracle-64kUpgrade linux-image-6.8.0-2053-raspi-realtimeUpgrade linux-image-raspi-7.0Upgrade linux-image-lowlatencyUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-genericUpgrade linux-image-azureUpgrade linux-image-6.8.0-1049-gkeopUpgrade linux-image-6.8.0-1062-gke-64kUpgrade linux-image-6.8.0-1036-xilinxUpgrade linux-image-lowlatency-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-7.0Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-nvidiaUpgrade linux-image-nvidia-bosUpgrade linux-image-gke-64kUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-aws-6.8Upgrade linux-image-azure-fde-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-6.8.0-1062-nvidia-lowlatencyUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-fipsUpgrade linux-image-generic-64k-6.8Upgrade linux-image-azure-fdeUpgrade linux-image-gcp-6.8Upgrade linux-image-raspiUpgrade linux-image-lowlatency-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-6.8.0-1067-gcpUpgrade linux-image-6.8.0-139-lowlatencyUpgrade linux-image-raspi-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-6.8.0-1062-nvidia-64kUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-fipsUpgrade linux-image-awsUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1061-oracleUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-generic-lpaeUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1067-azureUpgrade linux-image-6.8.0-1067-gcp-fipsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-virtual-6.8Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.8.0-1064-aws-fipsUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-oracle-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-ibm-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-139-fipsUpgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-gkeop-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-generic-6.8Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-6.8.0-1064-raspiUpgrade linux-image-aws-fips-6.8Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-6.8.0-1067-azure-fipsUpgrade linux-image-6.8.0-1064-ibmUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-gke-64k-6.8Upgrade linux-image-gke-6.8Upgrade linux-image-generic-64kUpgrade linux-image-fips-6.8Upgrade linux-image-virtualUpgrade linux-image-gcpUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-6.8.1-1059-realtimeUpgrade linux-image-6.8.0-1067-gcp-64kUpgrade linux-image-6.8.0-1064-awsUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-xilinxUpgrade linux-image-kvmUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-ibm-7.0Upgrade linux-image-gkeUpgrade linux-image-azure-6.8Upgrade linux-image-oracle-7.0Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-6.8.0-1062-nvidia-lowlatency-64kUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gkeopUpgrade linux-image-aws-64k-6.8Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-6.8.0-139-genericUpgrade linux-image-ibmUpgrade linux-image-6.8.0-1064-aws-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-azure-7.0Upgrade linux-image-realtimeUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-6.8.0-139-generic-64kUpgrade linux-image-oracle-64kUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-6.8.0-139-lowlatency-64kUpgrade linux-image-6.8.0-1062-nvidiaUpgrade linux-image-laptop-23.10Upgrade linux-image-intel-iotgUpgrade linux-image-ibm-classicUpgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1062-gkeUpgrade linux-image-azure-fips-6.8Upgrade linux-image-nvidia-tegraUpgrade linux-image-aws-lts-24.04 | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 3, 2026 | Jul 19, 2026 |
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