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.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-modules-extraUpgrade kernel6.12-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-tools-develUpgrade kernel6.12-headersUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade bpftool6.12Upgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade perf6.12Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-develUpgrade kernel-livepatch-6.12.111-136.204Upgrade kernel6.12Upgrade bpftool6.12-debuginfoUpgrade perf6.12-debuginfo | 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 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2026 | Sep 24, 2026 |
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