fkie_cve-2025-21883
Vulnerability from fkie_nvd
Published
2025-03-27 15:15
Modified
2025-10-29 16:50
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ice: Fix deinitializing VF in error path If ice_ena_vfs() fails after calling ice_create_vf_entries(), it frees all VFs without removing them from snapshot PF-VF mailbox list, leading to list corruption. Reproducer: devlink dev eswitch set $PF1_PCI mode switchdev ip l s $PF1 up ip l s $PF1 promisc on sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs sleep 1 echo 1 > /sys/class/net/$PF1/device/sriov_numvfs Trace (minimized): list_add corruption. next->prev should be prev (ffff8882e241c6f0), but was 0000000000000000. (next=ffff888455da1330). kernel BUG at lib/list_debug.c:29! RIP: 0010:__list_add_valid_or_report+0xa6/0x100 ice_mbx_init_vf_info+0xa7/0x180 [ice] ice_initialize_vf_entry+0x1fa/0x250 [ice] ice_sriov_configure+0x8d7/0x1520 [ice] ? __percpu_ref_switch_mode+0x1b1/0x5d0 ? __pfx_ice_sriov_configure+0x10/0x10 [ice] Sometimes a KASAN report can be seen instead with a similar stack trace: BUG: KASAN: use-after-free in __list_add_valid_or_report+0xf1/0x100 VFs are added to this list in ice_mbx_init_vf_info(), but only removed in ice_free_vfs(). Move the removing to ice_free_vf_entries(), which is also being called in other places where VFs are being removed (including ice_free_vfs() itself).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34393fd78d7183a007eaf0090966ebedcc29bd57Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c01102bec9592928e6b155da41cfcd5d25a2066Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79990cf5e7aded76d0c092c9f5ed31eb1c75e02cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a4880583f88deba63504ce1c8287a70d39c01378Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix deinitializing VF in error path\n\nIf ice_ena_vfs() fails after calling ice_create_vf_entries(), it frees\nall VFs without removing them from snapshot PF-VF mailbox list, leading\nto list corruption.\n\nReproducer:\n  devlink dev eswitch set $PF1_PCI mode switchdev\n  ip l s $PF1 up\n  ip l s $PF1 promisc on\n  sleep 1\n  echo 1 \u003e /sys/class/net/$PF1/device/sriov_numvfs\n  sleep 1\n  echo 1 \u003e /sys/class/net/$PF1/device/sriov_numvfs\n\nTrace (minimized):\n  list_add corruption. next-\u003eprev should be prev (ffff8882e241c6f0), but was 0000000000000000. (next=ffff888455da1330).\n  kernel BUG at lib/list_debug.c:29!\n  RIP: 0010:__list_add_valid_or_report+0xa6/0x100\n   ice_mbx_init_vf_info+0xa7/0x180 [ice]\n   ice_initialize_vf_entry+0x1fa/0x250 [ice]\n   ice_sriov_configure+0x8d7/0x1520 [ice]\n   ? __percpu_ref_switch_mode+0x1b1/0x5d0\n   ? __pfx_ice_sriov_configure+0x10/0x10 [ice]\n\nSometimes a KASAN report can be seen instead with a similar stack trace:\n  BUG: KASAN: use-after-free in __list_add_valid_or_report+0xf1/0x100\n\nVFs are added to this list in ice_mbx_init_vf_info(), but only removed\nin ice_free_vfs(). Move the removing to ice_free_vf_entries(), which is\nalso being called in other places where VFs are being removed (including\nice_free_vfs() itself)."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ice: Se corrige la desinicializaci\u00f3n de VF en la ruta de error. Si ice_ena_vfs() falla tras llamar a ice_create_vf_entries(), libera todas las VF sin eliminarlas de la lista de buzones PF-VF de la instant\u00e1nea, lo que provoca la corrupci\u00f3n de la lista. Reproductor: devlink dev eswitch set $PF1_PCI mode switchdev ip ls $PF1 up ip ls $PF1 promisc on sleep 1 echo 1 \u0026gt; /sys/class/net/$PF1/device/sriov_numvfs sleep 1 echo 1 \u0026gt; /sys/class/net/$PF1/device/sriov_numvfs Rastreo (minimizado): corrupci\u00f3n de list_add. siguiente-\u0026gt;anterior deber\u00eda ser anterior (ffff8882e241c6f0), pero era 0000000000000000. (siguiente=ffff888455da1330). \u00a1ERROR del n\u00facleo en lib/list_debug.c:29! RIP: 0010:__list_add_valid_or_report+0xa6/0x100 ice_mbx_init_vf_info+0xa7/0x180 [ice] ice_initialize_vf_entry+0x1fa/0x250 [ice] ice_sriov_configure+0x8d7/0x1520 [ice] ? __percpu_ref_switch_mode+0x1b1/0x5d0 ? __pfx_ice_sriov_configure+0x10/0x10 [ice] A veces, un informe de KASAN se puede ver con un seguimiento de pila similar: ERROR: KASAN: use-after-free en __list_add_valid_or_report+0xf1/0x100. Los VF se a\u00f1aden a esta lista en ice_mbx_init_vf_info(), pero solo se eliminan en ice_free_vfs(). Traslada la eliminaci\u00f3n a ice_free_vf_entries(), que tambi\u00e9n se invoca en otros lugares donde se eliminan VF (incluido el propio ice_free_vfs())."
    }
  ],
  "id": "CVE-2025-21883",
  "lastModified": "2025-10-29T16:50:28.967",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-03-27T15:15:56.210",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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