{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7bdbf7446305cb65c510c16d57cde82bc76b234a"
            },
            {
              "fixed": "57cf929a33cb76be3f24886073ae820b4c496914"
            },
            {
              "fixed": "7a0855e73757ee9cf25ba635a1c735018ecba742"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93270.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn\n\nThe BPF_MOV64_PERCPU_REG insn requires JIT to emit native code to for\n'dst_reg = src_reg + \u003cpercpu_base_off\u003e'.\n\nHowever, the interpreter ignores the 'off' at its ALU64_MOV_X label.\nThe 'off' indicates the insn is BPF_MOV64_PERCPU_REG insn. Then, when\nthe interpreter loads memory from the register, it will hit a page\nfault.\n\n[    2.545572] BUG: unable to handle page fault for address: ffffffffacaaf034\n[    2.546485] #PF: supervisor read access in kernel mode\n[    2.547167] #PF: error_code(0x0000) - not-present page\n[    2.547850] PGD 134e63067 P4D 134e63067 PUD 134e64063 PMD 10021c063 PTE 800ffffeca550062\n[    2.548912] Oops: Oops: 0000 [#1] SMP PTI\n\nSet jit_required as true in order to disallow interpreter fallback in\ncore.c::__bpf_prog_select_runtime(), if any BPF_ADDR_PERCPU insn is\npatched to the prog.\n\nBTW, rename the helper bpf_map_supports_cpu_flags() to\nbpf_map_is_percpu_map().",
  "id": "CVE-2026-93270",
  "modified": "2026-09-26T03:30:24.500193843Z",
  "published": "2026-09-24T15:52:09.868Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57cf929a33cb76be3f24886073ae820b4c496914"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a0855e73757ee9cf25ba635a1c735018ecba742"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93270.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93270"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: Disallow interpreter fallback for BPF_ADDR_PERCPU insn"
}