{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5168a68eb78fa1c67a8b2d31d0642c7fd866cc12"
            },
            {
              "fixed": "60cbe67d1342f34b66df1c2ee328e3cd333767d7"
            },
            {
              "fixed": "69c0e6246575b780ae0d3f411c749bcf13c221f3"
            },
            {
              "fixed": "2a55fdf9f746a1a6ced7fd62ea1080b8a917e0b0"
            },
            {
              "fixed": "66366d291f666ddeda5f8c84f253e308de3e6b55"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "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-2026-64415.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup\n\nWe hit a real softlockup in an internal stress test environment.  The\nworkload was LTP memory/swap stress on a large arm64 machine, with 320\nCPUs, about 1TB memory and an 8.6GB swap device.  The system was under\nheavy load and the swap device had a large number of full clusters.  The\nsoftlockup was triggered during a stress test after about 3 days.\n\nSo, add periodic cond_resched() calls during large full_clusters\nreclaim operations to prevent softlockup issues.\n\nDetailed call trace as follow:\n\nPID: 3817773  TASK: ffff0883bb28b780  CPU: 48   COMMAND: \"kworker/48:7\"\n   #0 [ffff800080183d10] __crash_kexec at ffffa4c1361e5de4\n   #1 [ffff800080183d90] panic at ffffa4c1360d5e9c\n   #2 [ffff800080183e20] watchdog_timer_fn at ffffa4c136231fa8\n   ...\n  #16 [ffff8000c4ad3cb0] swap_cache_del_folio at ffffa4c1363e1614\n  #17 [ffff8000c4ad3ce0] __try_to_reclaim_swap at ffffa4c1363e4bfc\n  #18 [ffff8000c4ad3d40] swap_reclaim_full_clusters at ffffa4c1363e5474\n  #19 [ffff8000c4ad3da0] swap_reclaim_work at ffffa4c1363e550c\n  #20 [ffff8000c4ad3dc0] process_one_work at ffffa4c136102edc\n  #21 [ffff8000c4ad3e10] worker_thread at ffffa4c136103398\n  #22 [ffff8000c4ad3e70] kthread at ffffa4c13610d95c",
  "id": "CVE-2026-64415",
  "modified": "2026-09-06T03:30:52.133167888Z",
  "published": "2026-07-25T08:50:55.226Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a55fdf9f746a1a6ced7fd62ea1080b8a917e0b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60cbe67d1342f34b66df1c2ee328e3cd333767d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66366d291f666ddeda5f8c84f253e308de3e6b55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69c0e6246575b780ae0d3f411c749bcf13c221f3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64415.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64415"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup"
}