CVE-2025-38109 (GCVE-0-2025-38109)

Vulnerability from cvelistv5 – Published: 2025-07-03 08:35 – Updated: 2025-07-28 04:12
VLAI?
Title
net/mlx5: Fix ECVF vports unload on shutdown flow
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix ECVF vports unload on shutdown flow Fix shutdown flow UAF when a virtual function is created on the embedded chip (ECVF) of a BlueField device. In such case the vport acl ingress table is not properly destroyed. ECVF functionality is independent of ecpf_vport_exists capability and thus functions mlx5_eswitch_(enable|disable)_pf_vf_vports() should not test it when enabling/disabling ECVF vports. kernel log: [] refcount_t: underflow; use-after-free. [] WARNING: CPU: 3 PID: 1 at lib/refcount.c:28 refcount_warn_saturate+0x124/0x220 ---------------- [] Call trace: [] refcount_warn_saturate+0x124/0x220 [] tree_put_node+0x164/0x1e0 [mlx5_core] [] mlx5_destroy_flow_table+0x98/0x2c0 [mlx5_core] [] esw_acl_ingress_table_destroy+0x28/0x40 [mlx5_core] [] esw_acl_ingress_lgcy_cleanup+0x80/0xf4 [mlx5_core] [] esw_legacy_vport_acl_cleanup+0x44/0x60 [mlx5_core] [] esw_vport_cleanup+0x64/0x90 [mlx5_core] [] mlx5_esw_vport_disable+0xc0/0x1d0 [mlx5_core] [] mlx5_eswitch_unload_ec_vf_vports+0xcc/0x150 [mlx5_core] [] mlx5_eswitch_disable_sriov+0x198/0x2a0 [mlx5_core] [] mlx5_device_disable_sriov+0xb8/0x1e0 [mlx5_core] [] mlx5_sriov_detach+0x40/0x50 [mlx5_core] [] mlx5_unload+0x40/0xc4 [mlx5_core] [] mlx5_unload_one_devl_locked+0x6c/0xe4 [mlx5_core] [] mlx5_unload_one+0x3c/0x60 [mlx5_core] [] shutdown+0x7c/0xa4 [mlx5_core] [] pci_device_shutdown+0x3c/0xa0 [] device_shutdown+0x170/0x340 [] __do_sys_reboot+0x1f4/0x2a0 [] __arm64_sys_reboot+0x2c/0x40 [] invoke_syscall+0x78/0x100 [] el0_svc_common.constprop.0+0x54/0x184 [] do_el0_svc+0x30/0xac [] el0_svc+0x48/0x160 [] el0t_64_sync_handler+0xa4/0x12c [] el0t_64_sync+0x1a4/0x1a8 [] --[ end trace 9c4601d68c70030e ]---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a7719b29a82199b90ebbf355d3332e0fbfbf6045 , < 5953ae44dfe5dbad374318875be834c3b7b71ee6 (git)
Affected: a7719b29a82199b90ebbf355d3332e0fbfbf6045 , < da15ca0553325acf68039015f2f4db750c8e2b96 (git)
Affected: a7719b29a82199b90ebbf355d3332e0fbfbf6045 , < 24db585d369f949f698e03d7d8017e5ae19d0497 (git)
Affected: a7719b29a82199b90ebbf355d3332e0fbfbf6045 , < 687560d8a9a2d654829ad0da1ec24242f1de711d (git)
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    Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.94 , ≤ 6.6.* (semver)
Unaffected: 6.12.34 , ≤ 6.12.* (semver)
Unaffected: 6.15.3 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/eswitch.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5953ae44dfe5dbad374318875be834c3b7b71ee6",
              "status": "affected",
              "version": "a7719b29a82199b90ebbf355d3332e0fbfbf6045",
              "versionType": "git"
            },
            {
              "lessThan": "da15ca0553325acf68039015f2f4db750c8e2b96",
              "status": "affected",
              "version": "a7719b29a82199b90ebbf355d3332e0fbfbf6045",
              "versionType": "git"
            },
            {
              "lessThan": "24db585d369f949f698e03d7d8017e5ae19d0497",
              "status": "affected",
              "version": "a7719b29a82199b90ebbf355d3332e0fbfbf6045",
              "versionType": "git"
            },
            {
              "lessThan": "687560d8a9a2d654829ad0da1ec24242f1de711d",
              "status": "affected",
              "version": "a7719b29a82199b90ebbf355d3332e0fbfbf6045",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/eswitch.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.94",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.34",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix ECVF vports unload on shutdown flow\n\nFix shutdown flow UAF when a virtual function is created on the embedded\nchip (ECVF) of a BlueField device. In such case the vport acl ingress\ntable is not properly destroyed.\n\nECVF functionality is independent of ecpf_vport_exists capability and\nthus functions mlx5_eswitch_(enable|disable)_pf_vf_vports() should not\ntest it when enabling/disabling ECVF vports.\n\nkernel log:\n[] refcount_t: underflow; use-after-free.\n[] WARNING: CPU: 3 PID: 1 at lib/refcount.c:28\n   refcount_warn_saturate+0x124/0x220\n----------------\n[] Call trace:\n[] refcount_warn_saturate+0x124/0x220\n[] tree_put_node+0x164/0x1e0 [mlx5_core]\n[] mlx5_destroy_flow_table+0x98/0x2c0 [mlx5_core]\n[] esw_acl_ingress_table_destroy+0x28/0x40 [mlx5_core]\n[] esw_acl_ingress_lgcy_cleanup+0x80/0xf4 [mlx5_core]\n[] esw_legacy_vport_acl_cleanup+0x44/0x60 [mlx5_core]\n[] esw_vport_cleanup+0x64/0x90 [mlx5_core]\n[] mlx5_esw_vport_disable+0xc0/0x1d0 [mlx5_core]\n[] mlx5_eswitch_unload_ec_vf_vports+0xcc/0x150 [mlx5_core]\n[] mlx5_eswitch_disable_sriov+0x198/0x2a0 [mlx5_core]\n[] mlx5_device_disable_sriov+0xb8/0x1e0 [mlx5_core]\n[] mlx5_sriov_detach+0x40/0x50 [mlx5_core]\n[] mlx5_unload+0x40/0xc4 [mlx5_core]\n[] mlx5_unload_one_devl_locked+0x6c/0xe4 [mlx5_core]\n[] mlx5_unload_one+0x3c/0x60 [mlx5_core]\n[] shutdown+0x7c/0xa4 [mlx5_core]\n[] pci_device_shutdown+0x3c/0xa0\n[] device_shutdown+0x170/0x340\n[] __do_sys_reboot+0x1f4/0x2a0\n[] __arm64_sys_reboot+0x2c/0x40\n[] invoke_syscall+0x78/0x100\n[] el0_svc_common.constprop.0+0x54/0x184\n[] do_el0_svc+0x30/0xac\n[] el0_svc+0x48/0x160\n[] el0t_64_sync_handler+0xa4/0x12c\n[] el0t_64_sync+0x1a4/0x1a8\n[] --[ end trace 9c4601d68c70030e ]---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:12:25.395Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5953ae44dfe5dbad374318875be834c3b7b71ee6"
        },
        {
          "url": "https://git.kernel.org/stable/c/da15ca0553325acf68039015f2f4db750c8e2b96"
        },
        {
          "url": "https://git.kernel.org/stable/c/24db585d369f949f698e03d7d8017e5ae19d0497"
        },
        {
          "url": "https://git.kernel.org/stable/c/687560d8a9a2d654829ad0da1ec24242f1de711d"
        }
      ],
      "title": "net/mlx5: Fix ECVF vports unload on shutdown flow",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38109",
    "datePublished": "2025-07-03T08:35:19.240Z",
    "dateReserved": "2025-04-16T04:51:23.985Z",
    "dateUpdated": "2025-07-28T04:12:25.395Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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