{"id":"CVE-2026-43321","title":"bpf: Properly mark live registers for indirect jumps","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Properly mark live registers for indirect jumps\n\nFor a `gotox rX` instruction the rX register should be marked as used\nin the compute_insn_live_regs() function. Fi…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 493d9e0d608339a32f568504d5fd411a261bb0af < 7beae54111c34ca63357ef120e115889b915beb5","Linux >= 493d9e0d608339a32f568504d5fd411a261bb0af < d1aab1ca576c90192ba961094d51b0be6355a4d6","Linux 6.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:16:22.780603Z"},"published":"2026-05-08","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:38.766Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43321","references":[{"url":"https://git.kernel.org/stable/c/7beae54111c34ca63357ef120e115889b915beb5"},{"url":"https://git.kernel.org/stable/c/d1aab1ca576c90192ba961094d51b0be6355a4d6"}],"tags":["cve.org"],"epss":0.00165,"epssPercentile":0.05354,"ingestedAt":"2026-10-16T17:24:46.691Z","slug":"CVE-2026-43321","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Properly mark live registers for indirect jumps\n\nFor a `gotox rX` instruction the rX register should be marked as used\nin the compute_insn_live_regs() function. Fix this.\n\n## Affected\n\n- `Linux >= 493d9e0d608339a32f568504d5fd411a261bb0af < 7beae54111c34ca63357ef120e115889b915beb5`\n- `Linux >= 493d9e0d608339a32f568504d5fd411a261bb0af < d1aab1ca576c90192ba961094d51b0be6355a4d6`\n- `Linux 6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}