In the Linux kernel, the following vulnerability has been resolved:
cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message
Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list") extend the dialects from 3 to 4, but forget to decrease the extended length when specific the dialect, then the message length is larger than expected.
This maybe leak some info through network because not initialize the message body.
After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is reduced from 28 bytes to 26 bytes.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.15.75-48.135Upgrade kernel-tools-develUpgrade bpftoolUpgrade python-perfUpgrade kernel-livepatch-5.10.155-138.670Upgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade perfUpgrade kernelUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade python-perf-debuginfo | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade bpftool | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-oracle-5.15Upgrade linux-realtimeUpgrade linux-gkeUpgrade linux-xilinx-zynqmpUpgrade linux-intel-iotgUpgrade linux-azure-5.15Upgrade linux-oracle-5.4Upgrade linux-riscv-5.15Upgrade linux-nvidiaUpgrade linux-gcp-5.15Upgrade linux-kvmUpgrade linux-bluefieldUpgrade linux-raspi-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-fipsUpgrade linux-oracleUpgrade linux-gcpUpgrade linux-gcp-5.4Upgrade linux-ibmUpgrade linux-azureUpgrade linux-gkeopUpgrade linux-ibm-5.4Upgrade linux-iotUpgrade linux-hwe-5.15Upgrade linux-lowlatencyUpgrade linux-aws-5.4Upgrade linux-awsUpgrade linux-aws-fipsUpgrade linux-azure-fipsUpgrade linux-hwe-5.4Upgrade linux-raspiUpgrade linux-intel-iotg-5.15Upgrade linux-azure-5.4Upgrade linuxUpgrade linux-aws-5.15Upgrade linux-gcp-fips | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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