CVE-2026-43321

CVE-2026-43321 is a high vulnerability published on May 8, 2026. 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 computeinsnlive_regs() function. Fix this.

CVE-2026-43321 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2026-43321 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

CVE-2026-43321 has a CVSS v3 base score of 7.8 (NVD).

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43321, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.