In the Linux kernel, the following vulnerability has been resolved:
bpf: Don't predict JMP32 pointer vs zero comparisons
Consider the following program:
r1 = map_value; /* low 32 bits are zero at runtime */ r6 = 0xdead000000000000; if w1 != 0 goto l1; l0: r1 += r6; r2 = *(u64 *)(r1 + 0); exit; l1: r6 = 0; goto l0;
At the moment is_branch_taken() reports the jump as always taken, because it does not distinguish between BPF_JMP and BPF_JMP32 comparisons when processing 'if w1 != 0 ...'.
CVSS Details
- CVSS 3.1 Base Score: 7
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-modules-extra-commonUpgrade bpftool6.12-debuginfoUpgrade kernel-livepatch-6.18.54-121.166Upgrade kernel6.12-modules-extraUpgrade kernel6.12-headersUpgrade perf6.12Upgrade kernel-livepatch-6.12.111-136.204Upgrade perf6.18-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool6.18Upgrade kernel6.12-develUpgrade kernel6.12Upgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.18Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.18-modules-extraUpgrade kernel6.18-toolsUpgrade kernel6.12-tools-develUpgrade kernel6.12-tools-debuginfoUpgrade microvm-kernel6.18Upgrade python3-perf6.18Upgrade perf6.18Upgrade kernel6.12-debuginfoUpgrade kernel6.18-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade python3-perf6.12-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-tools-develUpgrade kernel6.18-headersUpgrade kernel6.18-develUpgrade kernel6.12-toolsUpgrade kernel6.18-tools-debuginfoUpgrade bpftool6.18-debuginfoUpgrade perf6.12-debuginfoUpgrade bpftool6.12 | Oct 13, 2026 | Sep 25, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Sep 30, 2026 | Sep 25, 2026 |
| Redhat_linux | — | No solution exists | 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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