io_uring: fix error pbuf checking

{
  "id": "ceb79199ca4ee8ebba297ff95a1f3abe22a8e5759abbeff6df1181b6a19c8b6b",
  "url": "https://osv.dev/vulnerability/CVE-2024-42254",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "io_uring: fix error pbuf checking",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: io_uring: fix error pbuf checking Syz reports a problem, which boils down to NULL vs IS_ERR inconsistent error handling in io_alloc_pbuf_ring(). KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:__io_remove_buffers+0xac/0x700 io_uring/kbuf.c:341 Call Trace: io_put_bl io_uring/kbuf.c:378 [inline] io_destroy_buffers+0x14e/0x490 io_uring/kbuf.c:392 io_ring_ctx_free+0xa00/0x1070 io_uring/io_uring.c:2613 io_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2844 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244",
    "evidence": "osv:CVE-2024-42254",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.10.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-42254",
      "aliases": [
        "CVE-2024-42254"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "46b1b3d81a7e99574e1a2f914086bc2fe382d79d"
                },
                {
                  "fixed": "78aefac7efdffddf7889405b7c08e6e0f030fa35"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "87585b05757dc70545efb434669708d276125559"
                },
                {
                  "fixed": "68d19af95a353f5e2b021602180b65b303eba99d"
                },
                {
                  "fixed": "bcc87d978b834c298bbdd9c52454c5d0a946e97e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42254.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.10.0"
                },
                {
                  "fixed": "6.10.1"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42254.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.956900581Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/68d19af95a353f5e2b021602180b65b303eba99d",
        "https://git.kernel.org/stable/c/78aefac7efdffddf7889405b7c08e6e0f030fa35",
        "https://git.kernel.org/stable/c/bcc87d978b834c298bbdd9c52454c5d0a946e97e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42254.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-42254",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42254.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-42254",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 503159,
  "published_at": "2024-08-08T08:49:14.289+00:00"
}