ibmvnic: don't release napi in __ibmvnic_open()

{
  "id": "964e2412b972a4e04b47cc1e84b6f53da98352c520e6b2c8f4bfbc7e012d4cdd",
  "url": "https://osv.dev/vulnerability/CVE-2022-48811",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ibmvnic: don't release napi in __ibmvnic_open()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ibmvnic: don't release napi in __ibmvnic_open() If __ibmvnic_open() encounters an error such as when setting link state, it calls release_resources() which frees the napi structures needlessly. Instead, have __ibmvnic_open() only clean up the work it did so far (i.e. disable napi and irqs) and leave the rest to the callers. If caller of __ibmvnic_open() is ibmvnic_open(), it should release the resources immediately. If the caller is do_reset() or do_hard_reset(), they will release the resources on the next reset. This fixes following crash that occurred when running the drmgr command several times to add/remove a vnic interface: [102056] ibmvnic 30000003 env3: Disabling rx_scrq[6] irq [102056] ibmvnic 30000003 env3: Disabling rx_scrq[7] irq [102056] ibmvnic 30000003 env3: Replenished 8 pools Kernel attempted to read user page (10) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000010 Faulting instruction address: 0xc000000000a3c840 Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries ... CPU: 9 PID: 102056 Comm: kworker/9:2 Kdump: loaded Not tainted 5.16.0-rc5-autotest-g6441998e2e37 #1 Workqueue: events_long __ibmvnic_reset [ibmvnic] NIP: c000000000a3c840 LR: c0080000029b5378 CTR: c000000000a3c820 REGS: c0000000548e37e0 TRAP: 0300 Not tainted (5.16.0-rc5-autotest-g6441998e2e37) MSR: 8000000000009033 CR: 28248484 XER: 00000004 C",
    "evidence": "osv:CVE-2022-48811",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.27",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.16.10",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-48811",
      "aliases": [
        "CVE-2022-48811"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ed651a10875f13135a5f59c1bae4d51b377b3925"
                },
                {
                  "fixed": "960dfaf3b578dd23af012590e809ae2d58ba1827"
                },
                {
                  "fixed": "e08cb9056fb2564d1f6bad789bdf79ab09bf2f81"
                },
                {
                  "fixed": "61772b0908c640d0309c40f7d41d062ca4e979fa"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48811.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.12.0"
                },
                {
                  "fixed": "5.15.27"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.16.10"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48811.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.989486309Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa",
        "https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827",
        "https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48811.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-48811",
        "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/2022/48xxx/CVE-2022-48811.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-48811",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 497904,
  "published_at": "2024-07-16T11:44:01.224+00:00"
}