In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Add checking nr_subbufs to persistent ring buffer validation
Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same.
Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade bpftool6.12-debuginfoUpgrade kernel6.12-develUpgrade kernel-livepatch-6.12.111-136.204Upgrade perf6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-headersUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade perf6.12Upgrade kernel6.12-toolsUpgrade kernel6.12-modules-extraUpgrade python3-perf6.12-debuginfoUpgrade python3-perf6.12Upgrade bpftool6.12Upgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo | Oct 13, 2026 | Sep 25, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 30, 2026 | Sep 25, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2026 | Sep 25, 2026 |
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