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In the Linux kernel, the following vulnerability has been resolved:
bpf, x86: Fix trampoline stack size for 128-bit arguments
btf_distill_func_proto() accepts a function argument up to 16 bytes, so a 128-bit scalar such as __int128 reaches the x86 trampoline with arg_size == 16. But the current implementation assumes an __int128 argument only needs one register, so the register save area is under-allocated and save_args() overwrites adjacent stack slots.
Compute the register count from arg_size for all arguments to fix it.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-headersUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel-livepatch-6.18.54-121.166Upgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-tools-develUpgrade python3-perf6.18Upgrade kernel6.18-toolsUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-debuginfo-common-x86_64Upgrade microvm-kernel6.18Upgrade perf6.18Upgrade kernel6.18-modules-extraUpgrade kernel6.18-develUpgrade kernel6.18Upgrade bpftool6.18 | Oct 13, 2026 | Sep 17, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Sep 30, 2026 | Sep 17, 2026 |
| Redhat_linux | — | No solution exists | Oct 22, 2026 | Sep 17, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 30, 2026 | Sep 17, 2026 |
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