{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "57631054fae6dcc9c892ae6310b58bbb6f6e5048"
            },
            {
              "fixed": "cb27f3bf915cc0f20fc0c48da9059304e39ebd35"
            },
            {
              "fixed": "9354248fc1c33a844ca1872761f6668b393e8c37"
            },
            {
              "fixed": "8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1"
            },
            {
              "fixed": "52440e15d9628f8f239373c0f2e5e8f92feea2df"
            },
            {
              "fixed": "a3af84b0fa00ead01fcd0e28b5d773ff25990a0d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.18.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64507.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/bugs: Enable IBPB flush on BPF JIT allocation\n\nEnable hardening against JIT spraying when Spectre-v2 mitigations are in\nuse. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip\nenabling the IBPB flush if the BPF dispatcher is already using a retpoline\nsequence.\n\nThis hardening applies only when BPF-JIT is in use. Guard the enabling\nunder CONFIG_BPF_JIT so that bugs.c still builds with CONFIG_BPF_JIT=n.",
  "id": "CVE-2026-64507",
  "modified": "2026-07-28T03:55:58.159468182Z",
  "published": "2026-07-25T08:52:01.008Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52440e15d9628f8f239373c0f2e5e8f92feea2df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9354248fc1c33a844ca1872761f6668b393e8c37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3af84b0fa00ead01fcd0e28b5d773ff25990a0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb27f3bf915cc0f20fc0c48da9059304e39ebd35"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64507.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64507"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "x86/bugs: Enable IBPB flush on BPF JIT allocation"
}