bpf: Properly mark live registers for indirect jumps

{
  "id": "113c17f2c26152da924bdc9bd7a4db99b69741ad9212425b94e1594928f3dfbd",
  "url": "https://osv.dev/vulnerability/CVE-2026-43321",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bpf: Properly mark live registers for indirect jumps",
    "summary": "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.",
    "evidence": "osv:CVE-2026-43321",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.19.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-43321",
      "aliases": [
        "CVE-2026-43321"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "493d9e0d608339a32f568504d5fd411a261bb0af"
                },
                {
                  "fixed": "7beae54111c34ca63357ef120e115889b915beb5"
                },
                {
                  "fixed": "d1aab1ca576c90192ba961094d51b0be6355a4d6"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43321.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43321.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.282655090Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/7beae54111c34ca63357ef120e115889b915beb5",
        "https://git.kernel.org/stable/c/d1aab1ca576c90192ba961094d51b0be6355a4d6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43321.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43321",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43321.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43321",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498316,
  "published_at": "2026-05-08T13:26:15.6+00:00"
}