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In the Linux kernel, the following vulnerability has been resolved:
cifs: validate idmap key payload length
The cifs.idmap key type stores its payload length in key->datalen, which is limited to U16_MAX. Accepting a larger key payload truncates the recorded length and can make later users interpret the payload using inconsistent bounds.
Reject oversized preparsed payloads before allocating or copying them. This keeps key->datalen consistent with the stored data for both inline and separately allocated idmap payloads.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-livepatch-6.1.189-236.399Upgrade kernel-modules-extra-commonUpgrade microvm-kernelUpgrade bpftool-debuginfoUpgrade kernel-modules-extraUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade perfUpgrade perf-debuginfoUpgrade kernel-livepatch-6.12.111-136.204Upgrade bpftool6.12-debuginfoUpgrade kernel6.12Upgrade kernel-develUpgrade bpftoolUpgrade perf6.12-debuginfoUpgrade kernel6.12-develUpgrade perf6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernelUpgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel6.12-tools-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel6.12-tools-develUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade bpftool6.12Upgrade kernel6.12-debuginfoUpgrade kernel6.12-headersUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-modules-extraUpgrade kernel-debuginfoUpgrade python3-perf6.12Upgrade python3-perf-debuginfoUpgrade python3-perf | Oct 13, 2026 | Sep 24, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Sep 30, 2026 | Sep 24, 2026 |
| Redhat_linux | — | No solution exists | Sep 29, 2026 | Sep 24, 2026 |
| Ubuntu | — | Upgrade linux-fipsUpgrade linux-aws-fipsUpgrade linux-azure-fde-5.15Upgrade linux-gcp-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-gcp-5.15Upgrade linux-ibmUpgrade linux-oracleUpgrade linux-intel-iotg-5.15Upgrade linux-lowlatencyUpgrade linux-azure-fipsUpgrade linux-kvmUpgrade linux-intel-iot-realtimeUpgrade linux-intel-iotgUpgrade linux-riscv-5.15Upgrade linux-gkeopUpgrade linux-oracle-5.15Upgrade linux-riscvUpgrade linux-riscv-7.0Upgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-oem-7.0Upgrade linux-azure-fdeUpgrade linux-aws-5.15Upgrade linux-gcpUpgrade linux-hwe-7.0Upgrade linux-gkeUpgrade linux-hwe-5.15Upgrade linux-ibm-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-awsUpgrade linux-nvidia-tegraUpgrade linux-bluefieldUpgrade linux-nvidia-tegra-5.15Upgrade linuxUpgrade linux-realtimeUpgrade linux-azure | Nov 3, 2026 | Sep 24, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2026 | Sep 24, 2026 |
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