{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "838a10bd2ebfe11a60dd67687533a7cfc220cc86"
            },
            {
              "fixed": "0e78cb242a57e481061fcb542fed4d51afba25c4"
            },
            {
              "fixed": "d2eaea3599bcce659ce91862254dc91bcbdb6351"
            },
            {
              "fixed": "77515ab12e4983e6416f8c35039a3f0c0822ac70"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "b2fc4b17fc13810ef440fb323fad3981cd174985"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.6"
            },
            {
              "fixed": "6.13"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98062.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark signal tracepoint siginfo arguments as scalar\n\nThe signal_generate and signal_deliver tracepoints declare their info\nargument as a struct kernel_siginfo pointer. btf_ctx_access() therefore\ntreats it as a trusted pointer for tp_btf programs.\n\nSignal delivery also uses SEND_SIG_NOINFO and SEND_SIG_PRIV as special\nvalues for this argument. Those values are zero and one respectively,\nand are not pointers. A tp_btf program can currently dereference either\nvalue and fault the kernel. In particular, signal_generate can run from\ntimer interrupt context, turning the fault into a kernel panic.\n\nRecord both tracepoints in raw_tp_null_args[] and mark argument one as\na non-pointer. This preserves scalar access to the cookie while rejecting\ndirect and helper-mediated pointer use. Merely marking it nullable would\nnot suffice because SEND_SIG_PRIV is nonzero.",
  "id": "CVE-2026-98062",
  "modified": "2026-09-27T03:30:29.067255123Z",
  "published": "2026-09-25T10:24:06.597Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e78cb242a57e481061fcb542fed4d51afba25c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77515ab12e4983e6416f8c35039a3f0c0822ac70"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2eaea3599bcce659ce91862254dc91bcbdb6351"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98062.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98062"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: Mark signal tracepoint siginfo arguments as scalar"
}