{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "64ed3a049e3e81b801e7c5bb052416152443f585"
            },
            {
              "fixed": "51d78fad30dd9ae45721224103662bdbcf210096"
            },
            {
              "fixed": "93e7044b548a72022208595d2c1b188bb225ce83"
            },
            {
              "fixed": "8532983c312e8b875d7c9e440f8ee4674ea4b711"
            },
            {
              "fixed": "6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902"
            },
            {
              "fixed": "3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b"
            },
            {
              "fixed": "91542863abade2fd4f2b361991f5386ad9d19c8c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.17.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.152"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.104"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.45"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80730.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Fix crash passing ERR_PTR to kthread_stop()\n\nIn test_ringbuffer()'s out_free cleanup loop, the check\n`!rb_threads[cpu]` only catches NULL entries and misses entries that\nhold an ERR_PTR.\n\nrb_threads[] is static, so unassigned slots are NULL. But when\nkthread_run_on_cpu() fails for a cpu, it stores ERR_PTR(-ENOMEM) (or\n-EINTR) in rb_threads[cpu] before the creation loop jumps to out_free.\nThat entry is non-NULL, so the old `!ptr` check does not break, and the\ncleanup proceeds to call kthread_stop() on the ERR_PTR. kthread_stop()\nthen dereferences the bogus pointer, crashing the kernel during the\nlate_initcall self-test.\n\ncrash logs:\n  BUG: kernel NULL pointer dereference, address: 000000000000001c\n  Oops: 0002 [#1] SMP NOPTI\n  CPU: 1 PID: 1 Comm: swapper/0 Not tainted 7.2.0-rc6-dirty #7 PREEMPT(lazy)\n  RIP: 0010:kthread_stop+0x2e/0x220\n  RBX: fffffffffffffff4\n  CR2: 000000000000001c\n  Call Trace:\n   \u003cTASK\u003e\n   test_ringbuffer+0x1ec/0x650\n   do_one_initcall+0x6c/0x2c0\n   kernel_init_freeable+0x21d/0x420\n   kernel_init+0x15/0x1c0\n   ret_from_fork+0x21b/0x320\n   \u003c/TASK\u003e\n  Kernel panic - not syncing: Fatal exception",
  "id": "CVE-2026-80730",
  "modified": "2026-09-05T03:30:34.881928571Z",
  "published": "2026-09-03T08:21:48.325Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ea2fd344d93e3cf9503739b09fd702c0d8f8f0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51d78fad30dd9ae45721224103662bdbcf210096"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dd7a06894d6d3dc84319bd0b7d1a7c27df9d902"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8532983c312e8b875d7c9e440f8ee4674ea4b711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91542863abade2fd4f2b361991f5386ad9d19c8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93e7044b548a72022208595d2c1b188bb225ce83"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80730.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80730"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ring-buffer: Fix crash passing ERR_PTR to kthread_stop()"
}