{
  "cveId": "CVE-2026-93135",
  "url": "https://patchblox.com/security/cve/CVE-2026-93135",
  "summary": "CVE-2026-93135 is fixed in linux on 1 platform by DEBIAN-CVE-2026-93135 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "bpf: Reject programs with inlined helpers if JIT is not available",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bpf: Reject programs with inlined helpers if JIT is not available  When an architecture (such as LoongArch, ARM64, and RISC-V) implements bpf_jit_inlines_helper_call(), the verifier skips rewriting the helper call offset (insn-\u003Eimm) in bpf_do_misc_fixups(). This is because the helper is expected to be inlined by the JIT compiler later. Therefore, insn-\u003Eimm remains as the raw helper enum ID.  However, if JIT is disabled at runtime (net.core.bpf_jit_enable=0) or if JIT compilation fails dynamically (e.g., due to OOM), the program falls back to the BPF interpreter.  When the interpreter executes (__bpf_call_base \u002B insn-\u003Eimm) with the unpatched raw ID, it jumps into an invalid address space, triggering an instruction alignment fault or a kernel panic.  Although these helpers have valid C implementations in the kernel, the omission of offset rewriting makes runtime interpreter fallback fatal.  Fix this by setting \u0027prog-\u003Ejit_required = 1\u0027 when helper call rewriting is skipped for JIT inlining. This ensures that such programs are safely rejected if JIT is not available, preventing the runtime kernel panic.",
  "published": "2026-09-17T17:18:08Z",
  "severity": "",
  "epss": 0.00198,
  "epssPercentile": 0.09558,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93135",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-93135",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-93135",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}