s390/pci: Avoid deadlock between PCI error recovery and mlx5 crdump

{
  "id": "3c5cddef524c4ab80418eb4a4865b2978fad20d094f6b7a0dde1b67761f2cf1f",
  "url": "https://osv.dev/vulnerability/CVE-2025-68310",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "s390/pci: Avoid deadlock between PCI error recovery and mlx5 crdump",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: s390/pci: Avoid deadlock between PCI error recovery and mlx5 crdump Do not block PCI config accesses through pci_cfg_access_lock() when executing the s390 variant of PCI error recovery: Acquire just device_lock() instead of pci_dev_lock() as powerpc's EEH and generig PCI AER processing do. During error recovery testing a pair of tasks was reported to be hung: mlx5_core 0000:00:00.1: mlx5_health_try_recover:338:(pid 5553): health recovery flow aborted, PCI reads still not working INFO: task kmcheck:72 blocked for more than 122 seconds. Not tainted 5.14.0-570.12.1.bringup7.el9.s390x #1 \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message. task:kmcheck state:D stack:0 pid:72 tgid:72 ppid:2 flags:0x00000000 Call Trace: [<000000065256f030>] __schedule+0x2a0/0x590 [<000000065256f356>] schedule+0x36/0xe0 [<000000065256f572>] schedule_preempt_disabled+0x22/0x30 [<0000000652570a94>] __mutex_lock.constprop.0+0x484/0x8a8 [<000003ff800673a4>] mlx5_unload_one+0x34/0x58 [mlx5_core] [<000003ff8006745c>] mlx5_pci_err_detected+0x94/0x140 [mlx5_core] [<0000000652556c5a>] zpci_event_attempt_error_recovery+0xf2/0x398 [<0000000651b9184a>] __zpci_event_error+0x23a/0x2c0 INFO: task kworker/u1664:6:1514 blocked for more than 122 seconds. Not tainted 5.14.0-570.12.1.bringup7.el9.s390x #1 \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message. task:kworker/u1664:6 state:D stack:0 pid:1514 tgid:151",
    "evidence": "osv:CVE-2025-68310",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.159",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.117",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.58",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.17.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-68310",
      "aliases": [
        "CVE-2025-68310"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4cdf2f4e24ff0d345fc36ef6d6aec059333a261e"
                },
                {
                  "fixed": "d0df2503bc3c2be385ca2fd96585daad1870c7c5"
                },
                {
                  "fixed": "b63c061be622b17b495cbf78a6d5f2d4c3147f8e"
                },
                {
                  "fixed": "3591d56ea9bfd3e7fbbe70f749bdeed689d415f9"
                },
                {
                  "fixed": "54f938d9f5693af8ed586a08db4af5d9da1f0f2d"
                },
                {
                  "fixed": "0fd20f65df6aa430454a0deed8f43efa91c54835"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68310.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.159"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.117"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.58"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.17.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68310.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.770132638Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0fd20f65df6aa430454a0deed8f43efa91c54835",
        "https://git.kernel.org/stable/c/3591d56ea9bfd3e7fbbe70f749bdeed689d415f9",
        "https://git.kernel.org/stable/c/54f938d9f5693af8ed586a08db4af5d9da1f0f2d",
        "https://git.kernel.org/stable/c/b63c061be622b17b495cbf78a6d5f2d4c3147f8e",
        "https://git.kernel.org/stable/c/d0df2503bc3c2be385ca2fd96585daad1870c7c5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68310.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-68310",
        "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/2025/68xxx/CVE-2025-68310.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-68310",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521801,
  "published_at": "2025-12-16T15:39:41.652+00:00"
}