In the Linux kernel, the following vulnerability has been resolved:
ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()
After this commit (e2b76ab8b5c9 "ksmbd: add support for read compound"), response buffer management was changed to use dynamic iov array. In the new design, smb2_calc_max_out_buf_len() expects the second argument (hdr2_len) to be the offset of ->Buffer field in the response structure, not a hardcoded magic number. Fix the remaining call sites to use the correct offsetof() value.
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 |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.1Upgrade linux | May 3, 2026 | May 3, 2026 |
| Ubuntu | — | Upgrade linux-image-5.15.0-1116-azure-fipsUpgrade linux-image-gcpUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-raspi-5.15Upgrade linux-image-aws-fips-6.8Upgrade linux-image-generic-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-6.8.0-134-lowlatencyUpgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-1063-nvidia-tegraUpgrade linux-image-6.8.0-1058-nvidia-lowlatency-64kUpgrade linux-image-generic-64k-6.8Upgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-1052-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-oracle-64kUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-nvidia-5.15Upgrade linux-image-6.17.0-1018-azure-fdeUpgrade linux-image-azure-fips-6.8Upgrade linux-image-gkeop-6.8Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-ibm-6.8Upgrade linux-image-5.15.0-1111-aws-fipsUpgrade linux-image-5.15.0-185-genericUpgrade linux-image-ibm-classicUpgrade linux-image-6.17.0-1018-oracleUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-azure-fipsUpgrade linux-image-oem-24.04cUpgrade linux-image-6.8.0-1060-aws-fipsUpgrade linux-image-6.8.0-1063-gcp-64kUpgrade linux-image-azure-fdeUpgrade linux-image-aws-lts-24.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-awsUpgrade linux-image-aws-lts-22.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-5.15.0-1106-intel-iotgUpgrade linux-image-kvmUpgrade linux-image-6.17.0-1020-gcpUpgrade linux-image-realtime-6.17Upgrade linux-image-oem-24.04bUpgrade linux-image-5.15.0-185-fipsUpgrade linux-image-oem-24.04aUpgrade linux-image-ibmUpgrade linux-image-oem-24.04dUpgrade linux-image-azure-lts-24.04Upgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-1063-azureUpgrade linux-image-6.8.0-1045-gkeopUpgrade linux-image-gke-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-azure-cvmUpgrade linux-image-nvidia-64k-6.17Upgrade linux-image-6.17.0-1026-nvidia-64kUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-5.15.0-1107-gkeUpgrade linux-image-oem-20.04dUpgrade linux-image-gcp-fipsUpgrade linux-image-azure-6.17Upgrade linux-image-generic-6.17Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-virtual-6.17Upgrade linux-image-5.15.0-183-lowlatency-64kUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-5.15.0-1110-realtimeUpgrade linux-image-6.8.1-1055-realtimeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-5.15.0-1116-azureUpgrade linux-image-xilinxUpgrade linux-image-raspi-6.17Upgrade linux-image-6.17.0-1021-azureUpgrade linux-image-oracle-6.17Upgrade linux-image-6.8.0-1062-azure-fipsUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-oem-22.04aUpgrade linux-image-oem-6.17Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gcp-5.15Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-fips-5.15Upgrade linux-image-6.17.0-1019-aws-64kUpgrade linux-image-5.15.0-1105-ibmUpgrade linux-image-gke-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-6.17.0-40-generic-64kUpgrade linux-image-realtime-5.15Upgrade linux-image-6.8.0-1057-oracleUpgrade linux-image-oem-20.04cUpgrade linux-image-virtualUpgrade linux-image-5.15.0-1111-gcpUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-5.15.0-185-generic-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-oem-22.04bUpgrade linux-image-5.15.0-185-generic-lpaeUpgrade linux-image-6.17.0-1020-gcp-64kUpgrade linux-image-5.15.0-183-lowlatencyUpgrade linux-image-gcp-6.17Upgrade linux-image-6.8.0-2049-raspi-realtimeUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gkeopUpgrade linux-image-gkeUpgrade linux-image-azure-5.15Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gcp-64kUpgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1060-ibmUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-xilinx-6.8Upgrade linux-image-realtimeUpgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.8.0-1029-nvidia-tegra-rtUpgrade linux-image-6.17.0-1026-nvidiaUpgrade linux-image-6.17.0-1021-raspiUpgrade linux-image-5.15.0-1111-awsUpgrade linux-image-5.15.0-1106-nvidia-lowlatencyUpgrade linux-image-5.15.0-1108-oracleUpgrade linux-image-6.8.0-1058-nvidiaUpgrade linux-image-6.8.0-1060-aws-64kUpgrade linux-image-5.15.0-1116-azure-fdeUpgrade linux-image-nvidia-6.17Upgrade linux-image-generic-5.15Upgrade linux-image-raspi-nolpaeUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-realtime-6.8.1Upgrade linux-image-raspi-6.8Upgrade linux-image-aws-fips-5.15Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-hwe-24.04Upgrade linux-image-6.8.0-134-fipsUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.0-1032-xilinxUpgrade linux-image-5.15.0-1111-gcp-fipsUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-fipsUpgrade linux-image-genericUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-generic-lpaeUpgrade linux-image-aws-64k-6.17Upgrade linux-image-6.17.0-40-genericUpgrade linux-image-6.17.0-1017-realtimeUpgrade linux-image-5.15.0-1111-aws-64kUpgrade linux-image-5.15.0-1105-raspiUpgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-1058-gkeUpgrade linux-image-5.15.0-1103-intel-iot-realtimeUpgrade linux-image-5.15.0-1074-xilinx-zynqmpUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-virtual-6.8Upgrade linux-image-raspiUpgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-kvm-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-64k-6.17Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-azure-fde-5.15Upgrade linux-image-6.8.0-1060-awsUpgrade linux-image-laptop-23.10Upgrade linux-image-intelUpgrade linux-image-gke-64kUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-5.15.0-1094-gkeopUpgrade linux-image-oem-22.04dUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-5.15.0-1103-kvmUpgrade linux-image-6.8.0-1058-gke-64kUpgrade linux-image-6.8.0-1060-raspiUpgrade linux-image-5.15.0-1106-nvidiaUpgrade linux-image-5.15.0-1052-nvidia-tegra-igxUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-oracle-64k-6.17Upgrade linux-image-oracle-5.15Upgrade linux-image-6.8.0-1029-nvidia-tegraUpgrade linux-image-6.17.0-1028-oemUpgrade linux-image-oem-24.04Upgrade linux-image-oem-22.04cUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-fde-6.17Upgrade linux-image-aws-64k-5.15Upgrade linux-image-aws-64kUpgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-6.8.0-134-lowlatency-64kUpgrade linux-image-6.8.0-134-generic-64kUpgrade linux-image-azure-fde-6.8Upgrade linux-image-5.15.0-1063-nvidia-tegra-rtUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-aws-6.17Upgrade linux-image-6.8.0-134-genericUpgrade linux-image-6.8.0-1063-gcp-fipsUpgrade linux-image-6.8.0-1058-nvidia-lowlatencyUpgrade linux-image-6.8.0-1057-oracle-64kUpgrade linux-image-6.17.0-1019-awsUpgrade linux-image-6.17.0-1018-oracle-64kUpgrade linux-image-oem-22.04Upgrade linux-image-oem-20.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-azure-lts-22.04Upgrade linux-image-azure-6.8Upgrade linux-image-azureUpgrade linux-image-6.8.0-1063-gcpUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-virtual-5.15Upgrade linux-image-oracleUpgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-tegraUpgrade linux-image-6.8.0-1058-nvidia-64kUpgrade linux-image-nvidia-64k-hwe-24.04Upgrade linux-image-gcp-64k-6.17Upgrade linux-image-intel-iotgUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-lowlatency-5.15Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-ibm-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-64k-5.15Upgrade linux-image-generic-64k | Jul 1, 2026 | Apr 22, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Apr 22, 2026 |
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