bpf: Properly mark live registers for indirect jumps
CVE-2026-43321 is fixed in 23 products on 1 platform, first by ALAS2023-2026-1702, released May 11, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: bpf: Properly mark live registers for indirect jumps For a `gotox rX` instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel-livepatch-6.18.16-18.222 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf-devel · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-libbpf-static · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| linux · Debian 14 | 6.19.6-1 | DEBIAN-CVE-2026-43321 | May 15, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.16-18.222.amzn2023 | ALAS2023-2026-1702 | May 11, 2026 |
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