{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0764771dab80d7b84b9a271bee7f1b21a04a3f0c"
            },
            {
              "fixed": "132bee76097be421ab3012130b5b506324cf2be1"
            },
            {
              "fixed": "2581b43e162cfc43e6f5d8dd8d2b38f3441550de"
            },
            {
              "fixed": "6e187281f978a2bff98ead6aa40f8ddc9a2c9afb"
            },
            {
              "fixed": "a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.31"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.56"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98937.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Check kernel access when kernel callchains are requested\n\nperf_event_open() currently gates perf_allow_kernel() only on\n!attr.exclude_kernel.\n\nHowever, users can still request kernel callchain collection with\nattr.exclude_callchain_kernel == 0 even when attr.exclude_kernel == 1.\nThat still requires kernel profiling privilege, but the existing check\ndoes not enforce it.\n\nUpdate the permission check to call perf_allow_kernel() when either\nkernel sampling is requested or kernel callchains are requested.\n\nThis keeps permission checks aligned with requested data and prevents\nunprivileged use of kernel callchain capture.",
  "id": "CVE-2026-98937",
  "modified": "2026-10-28T02:30:44.495648271Z",
  "published": "2026-10-23T12:11:53.327Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/132bee76097be421ab3012130b5b506324cf2be1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2581b43e162cfc43e6f5d8dd8d2b38f3441550de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e187281f978a2bff98ead6aa40f8ddc9a2c9afb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98937.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98937"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "perf/core: Check kernel access when kernel callchains are requested"
}