ice: fix memory leak in aRFS after reset

{
  "id": "1123c27c1173d3aa4b3a9880ec9648fa282be83b97e001bde4270627e8bcb5cc",
  "url": "https://osv.dev/vulnerability/CVE-2025-21981",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ice: fix memory leak in aRFS after reset",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ice: fix memory leak in aRFS after reset Fix aRFS (accelerated Receive Flow Steering) structures memory leak by adding a checker to verify if aRFS memory is already allocated while configuring VSI. aRFS objects are allocated in two cases: - as part of VSI initialization (at probe), and - as part of reset handling However, VSI reconfiguration executed during reset involves memory allocation one more time, without prior releasing already allocated resources. This led to the memory leak with the following signature: [root@os-delivery ~]# cat /sys/kernel/debug/kmemleak unreferenced object 0xff3c1ca7252e6000 (size 8192): comm \"kworker/0:0\", pid 8, jiffies 4296833052 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): [] __kmalloc_cache_noprof+0x275/0x340 [] ice_init_arfs+0x3a/0xe0 [ice] [] ice_vsi_cfg_def+0x607/0x850 [ice] [] ice_vsi_setup+0x5b/0x130 [ice] [] ice_init+0x1c1/0x460 [ice] [] ice_probe+0x2af/0x520 [ice] [] local_pci_probe+0x43/0xa0 [] work_for_cpu_fn+0x13/0x20 [] process_one_work+0x179/0x390 [] worker_thread+0x239/0x340 [] kthread+0xcc/0x100 [] ret_from_fork+0x2d/0x50 [] ret_from_fork_asm+0x1a/0x30 ...",
    "evidence": "osv:CVE-2025-21981",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.236",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.180",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.132",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.84",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.20",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-21981",
      "aliases": [
        "CVE-2025-21981"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "28bf26724fdb0e02267d19e280d6717ee810a10d"
                },
                {
                  "fixed": "ef2bc94059836a115430a6ad9d2838b0b34dc8f5"
                },
                {
                  "fixed": "e6902101f34f098af59b0d1d8cf90c4124c02c6a"
                },
                {
                  "fixed": "fcbacc47d16306c87ad1b820b7a575f6e9eae58b"
                },
                {
                  "fixed": "5d30d256661fc11b6e73fac6c3783a702e1006a3"
                },
                {
                  "fixed": "3b27e6e10a32589fcd293b8933ab6de9387a460e"
                },
                {
                  "fixed": "78f3d64b30210c0e521c59357431aca14024cb79"
                },
                {
                  "fixed": "23d97f18901ef5e4e264e3b1777fe65c760186b5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21981.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.8.0"
                },
                {
                  "fixed": "5.10.236"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.180"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.132"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.84"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.20"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21981.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.605069335Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/23d97f18901ef5e4e264e3b1777fe65c760186b5",
        "https://git.kernel.org/stable/c/3b27e6e10a32589fcd293b8933ab6de9387a460e",
        "https://git.kernel.org/stable/c/5d30d256661fc11b6e73fac6c3783a702e1006a3",
        "https://git.kernel.org/stable/c/78f3d64b30210c0e521c59357431aca14024cb79",
        "https://git.kernel.org/stable/c/e6902101f34f098af59b0d1d8cf90c4124c02c6a",
        "https://git.kernel.org/stable/c/ef2bc94059836a115430a6ad9d2838b0b34dc8f5",
        "https://git.kernel.org/stable/c/fcbacc47d16306c87ad1b820b7a575f6e9eae58b",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21981.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-21981",
        "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/2025/21xxx/CVE-2025-21981.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-21981",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491744,
  "published_at": "2025-04-01T15:47:09.744+00:00"
}