virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable()

{
  "id": "95ce6633c59a923de45a6a2d57db473b4e2a819bbeb65d8abae0c548f13a8353",
  "url": "https://osv.dev/vulnerability/CVE-2025-37955",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable() The selftests added to our CI by Bui Quang Minh recently reveals that there is a mem leak on the error path of virtnet_xsk_pool_enable(): unreferenced object 0xffff88800a68a000 (size 2048): comm \"xdp_helper\", pid 318, jiffies 4294692778 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): __kvmalloc_node_noprof+0x402/0x570 virtnet_xsk_pool_enable+0x293/0x6a0 (drivers/net/virtio_net.c:5882) xp_assign_dev+0x369/0x670 (net/xdp/xsk_buff_pool.c:226) xsk_bind+0x6a5/0x1ae0 __sys_bind+0x15e/0x230 __x64_sys_bind+0x72/0xb0 do_syscall_64+0xc1/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f",
    "evidence": "osv:CVE-2025-37955",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.29",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.14.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-37955",
      "aliases": [
        "CVE-2025-37955"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e9f3962441c0a4d6f16c656e6c8aa02a3ccdd568"
                },
                {
                  "fixed": "94a6f6c204abb2b2dcd2ce287536cc924469cfb5"
                },
                {
                  "fixed": "ba6917810bb4a5a32661fa941717399052b3f0d9"
                },
                {
                  "fixed": "4397684a292a71fbc1e815c3e283f7490ddce5ae"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37955.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.11.0"
                },
                {
                  "fixed": "6.12.29"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.14.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37955.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.116897821Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4397684a292a71fbc1e815c3e283f7490ddce5ae",
        "https://git.kernel.org/stable/c/94a6f6c204abb2b2dcd2ce287536cc924469cfb5",
        "https://git.kernel.org/stable/c/ba6917810bb4a5a32661fa941717399052b3f0d9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37955.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-37955",
        "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/2025/37xxx/CVE-2025-37955.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-37955",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 487955,
  "published_at": "2025-05-20T16:01:49.209+00:00"
}