{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d503a04f8bc0c75dc9db9452d8cc79d748afb752"
            },
            {
              "fixed": "eb287c6e81dedef92da01eb947f380d0aae513c3"
            },
            {
              "fixed": "4bc49ae344d65cfcef738f281ac575cf73ca2fc5"
            }
          ],
          "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/2026/90xxx/CVE-2026-90177.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Check pointer type for all atomic RMW paths\n\nAtomic RMW verification records an instruction pointer type only when the\ncurrent destination is PTR_TO_ARENA. A second path can therefore reach the\nsame instruction with an ordinary pointer without comparing it against the\nsaved arena type.\n\nThe post-verification fixup uses the saved type to rewrite the instruction\nto BPF_PROBE_ATOMIC for every path. Record the actual destination type for\nall atomic RMW paths so the existing mismatch check rejects incompatible\nuses of one instruction.",
  "id": "CVE-2026-90177",
  "modified": "2026-09-19T03:30:16.824491082Z",
  "published": "2026-09-17T16:07:03.097Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bc49ae344d65cfcef738f281ac575cf73ca2fc5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb287c6e81dedef92da01eb947f380d0aae513c3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90177.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90177"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "bpf: Check pointer type for all atomic RMW paths"
}