bpf: Check the helper function is valid in get_helper_proto
CVE-2025-39990 is fixed in 35 products on 1 platform, first by DEBIAN-CVE-2025-39990, released October 15, 2025. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: bpf: Check the helper function is valid in get_helper_proto kernel test robot reported verifier bug [1] where the helper func pointer could be NULL due to disabled config option. As Alexei suggested we could check on that in get_helper_proto directly. Marking tail_call helper func with BPF_PTR_POISON, because it is unused by design. [1] https://lore.kernel.org/oe-lkp/202507160818.68358831-lkp@intel.com
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| dtb-aarch64 · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-64kb · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-64kb · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-default · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-default · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-default-base · opensuse-leap 16.0 | 6.12.0-160000.8.1.160000.2.5 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-default-base · sles 16.0 | 6.12.0-160000.8.1.160000.2.5 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-docs · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-docs · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-kvmsmall · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-kvmsmall · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-livepatch-6.12.53-69.119 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel-obs-build · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-obs-qa · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-obs-qa · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-rt · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-source · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-source · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-syms · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-syms · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel-zfcpdump · opensuse-leap 16.0 | 6.12.0-160000.8.1 | OPENSUSE-SU-2025:20172-1 | Dec 19, 2025 |
| kernel-zfcpdump · sles 16.0 | 6.12.0-160000.8.1 | SUSE-SU-2026:20015-1 | Dec 19, 2025 |
| kernel6.12 · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-devel · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-headers · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-libbpf · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-libbpf-debuginfo · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-libbpf-devel · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-libbpf-static · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-tools · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.57-1 | DEBIAN-CVE-2025-39990 | Oct 15, 2025 |
| linux · Debian 14 | 6.16.10-1 | DEBIAN-CVE-2025-39990 | Oct 15, 2025 |
| perf6.12 · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| python3-perf6.12 · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.53-69.119.amzn2023 | ALAS2023-2025-1254 | Oct 27, 2025 |
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