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CVE-2026-23353

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

ice: fix crash in ethtool offline loopback test

Since the conversion of ice to page pool, the ethtool loopback test crashes:

It crashes because we have not initialized libeth for the rx ring.

Fix it by treating ICE_VSI_LB VSIs slightly more like normal PF VSIs and letting them have a q_vector. It's just a dummy, because the loopback test does not use interrupts, but it contains a napi struct that can be passed to libeth_rx_fq_create() called from ice_vsi_cfg_rxq() -> ice_rxq_pp_create().

Detalles técnicos trazas, registros y código del informe original
 BUG: kernel NULL pointer dereference, address: 000000000000000c
 #PF: supervisor write access in kernel mode
 #PF: error_code(0x0002) - not-present page
 PGD 1100f1067 P4D 0
 Oops: Oops: 0002 [#1] SMP NOPTI
 CPU: 23 UID: 0 PID: 5904 Comm: ethtool Kdump: loaded Not tainted 6.19.0-0.rc7.260128g1f97d9dcf5364.49.eln154.x86_64 #1 PREEMPT(lazy)
 Hardware name: [...]
 RIP: 0010:ice_alloc_rx_bufs+0x1cd/0x310 [ice]
 Code: 83 6c 24 30 01 66 41 89 47 08 0f 84 c0 00 00 00 41 0f b7 dc 48 8b 44 24 18 48 c1 e3 04 41 bb 00 10 00 00 48 8d 2c 18 8b 04 24 <89> 45 0c 41 8b 4d 00 49 d3 e3 44 3b 5c 24 24 0f 83 ac fe ff ff 44
 RSP: 0018:ff7894738aa1f768 EFLAGS: 00010246
 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
 RDX: 0000000000000000 RSI: 0000000000000700 RDI: 0000000000000000
 RBP: 0000000000000000 R08: ff16dcae79880200 R09: 0000000000000019
 R10: 0000000000000001 R11: 0000000000001000 R12: 0000000000000000
 R13: 0000000000000000 R14: 0000000000000000 R15: ff16dcae6c670000
 FS:  00007fcf428850c0(0000) GS:ff16dcb149710000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 000000000000000c CR3: 0000000121227005 CR4: 0000000000773ef0
 PKRU: 55555554
 Call Trace:
  <TASK>
  ice_vsi_cfg_rxq+0xca/0x460 [ice]
  ice_vsi_cfg_rxqs+0x54/0x70 [ice]
  ice_loopback_test+0xa9/0x520 [ice]
  ice_self_test+0x1b9/0x280 [ice]
  ethtool_self_test+0xe5/0x200
  __dev_ethtool+0x1106/0x1a90
  dev_ethtool+0xbe/0x1a0
  dev_ioctl+0x258/0x4c0
  sock_do_ioctl+0xe3/0x130
  __x64_sys_ioctl+0xb9/0x100
  do_syscall_64+0x7c/0x700
  entry_SYSCALL_64_after_hwframe+0x76/0x7e
  [...]

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-23353",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "93f53db9f9dc4a16b40ecd18e6d338ad57e4b670",
              "lessThan": "85c98b81849e4724ae99005a6cccd33cab9cfd18",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "93f53db9f9dc4a16b40ecd18e6d338ad57e4b670",
              "lessThan": "a9c354e656597aededa027d63d2ff0973f6b033f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice_base.c",
            "drivers/net/ethernet/intel/ice/ice_ethtool.c",
            "drivers/net/ethernet/intel/ice/ice_lib.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.19",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice_base.c",
            "drivers/net/ethernet/intel/ice/ice_ethtool.c",
            "drivers/net/ethernet/intel/ice/ice_lib.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-03-25T11:16:33.817",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/85c98b81849e4724ae99005a6cccd33cab9cfd18",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a9c354e656597aededa027d63d2ff0973f6b033f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix crash in ethtool offline loopback test\n\nSince the conversion of ice to page pool, the ethtool loopback test\ncrashes:\n\n BUG: kernel NULL pointer dereference, address: 000000000000000c\n #PF: supervisor write access in kernel mode\n #PF: error_code(0x0002) - not-present page\n PGD 1100f1067 P4D 0\n Oops: Oops: 0002 [#1] SMP NOPTI\n CPU: 23 UID: 0 PID: 5904 Comm: ethtool Kdump: loaded Not tainted 6.19.0-0.rc7.260128g1f97d9dcf5364.49.eln154.x86_64 #1 PREEMPT(lazy)\n Hardware name: [...]\n RIP: 0010:ice_alloc_rx_bufs+0x1cd/0x310 [ice]\n Code: 83 6c 24 30 01 66 41 89 47 08 0f 84 c0 00 00 00 41 0f b7 dc 48 8b 44 24 18 48 c1 e3 04 41 bb 00 10 00 00 48 8d 2c 18 8b 04 24 <89> 45 0c 41 8b 4d 00 49 d3 e3 44 3b 5c 24 24 0f 83 ac fe ff ff 44\n RSP: 0018:ff7894738aa1f768 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: 0000000000000700 RDI: 0000000000000000\n RBP: 0000000000000000 R08: ff16dcae79880200 R09: 0000000000000019\n R10: 0000000000000001 R11: 0000000000001000 R12: 0000000000000000\n R13: 0000000000000000 R14: 0000000000000000 R15: ff16dcae6c670000\n FS:  00007fcf428850c0(0000) GS:ff16dcb149710000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000000000000c CR3: 0000000121227005 CR4: 0000000000773ef0\n PKRU: 55555554\n Call Trace:\n  <TASK>\n  ice_vsi_cfg_rxq+0xca/0x460 [ice]\n  ice_vsi_cfg_rxqs+0x54/0x70 [ice]\n  ice_loopback_test+0xa9/0x520 [ice]\n  ice_self_test+0x1b9/0x280 [ice]\n  ethtool_self_test+0xe5/0x200\n  __dev_ethtool+0x1106/0x1a90\n  dev_ethtool+0xbe/0x1a0\n  dev_ioctl+0x258/0x4c0\n  sock_do_ioctl+0xe3/0x130\n  __x64_sys_ioctl+0xb9/0x100\n  do_syscall_64+0x7c/0x700\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n  [...]\n\nIt crashes because we have not initialized libeth for the rx ring.\n\nFix it by treating ICE_VSI_LB VSIs slightly more like normal PF VSIs and\nletting them have a q_vector. It's just a dummy, because the loopback\ntest does not use interrupts, but it contains a napi struct that can be\npassed to libeth_rx_fq_create() called from ice_vsi_cfg_rxq() ->\nice_rxq_pp_create()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nice: corrige un fallo en la prueba de bucle invertido fuera de línea de ethtool\n\nDesde la conversión de ice a 'page pool', la prueba de bucle invertido de ethtool falla:\n\n ERROR: desreferencia de puntero NULL del kernel, dirección: 000000000000000c\n #PF: acceso de escritura de supervisor en modo kernel\n #PF: código de error(0x0002) - página no presente\n PGD 1100f1067 P4D 0\n Oops: Oops: 0002 [#1] SMP NOPTI\n CPU: 23 UID: 0 PID: 5904 Comando: ethtool Kdump: cargado No contaminado 6.19.0-0.rc7.260128g1f97d9dcf5364.49.eln154.x86_64 #1 PREEMPT(lazy)\n Nombre del hardware: [...]\n RIP: 0010:ice_alloc_rx_bufs+0x1cd/0x310 [ice]\n Código: 83 6c 24 30 01 66 41 89 47 08 0f 84 c0 00 00 00 41 0f b7 dc 48 8b 44 24 18 48 c1 e3 04 41 bb 00 10 00 00 48 8d 2c 18 8b 04 24 &lt;89&gt; 45 0c 41 8b 4d 00 49 d3 e3 44 3b 5c 24 24 0f 83 ac fe ff ff 44\n RSP: 0018:ff7894738aa1f768 EFLAGS: 00010246\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: 0000000000000700 RDI: 0000000000000000\n RBP: 0000000000000000 R08: ff16dcae79880200 R09: 0000000000000019\n R10: 0000000000000001 R11: 0000000000001000 R12: 0000000000000000\n R13: 0000000000000000 R14: 0000000000000000 R15: ff16dcae6c670000\n FS:  00007fcf428850c0(0000) GS:ff16dcb149710000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000000000000c CR3: 0000000121227005 CR4: 0000000000773ef0\n PKRU: 55555554\n Traza de Llamada:\n  \n  ice_vsi_cfg_rxq+0xca/0x460 [ice]\n  ice_vsi_cfg_rxqs+0x54/0x70 [ice]\n  ice_loopback_test+0xa9/0x520 [ice]\n  ice_self_test+0x1b9/0x280 [ice]\n  ethtool_self_test+0xe5/0x200\n  __dev_ethtool+0x1106/0x1a90\n  dev_ethtool+0xbe/0x1a0\n  dev_ioctl+0x258/0x4c0\n  sock_do_ioctl+0xe3/0x130\n  __x64_sys_ioctl+0xb9/0x100\n  do_syscall_64+0x7c/0x700\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n  [...]\n\nFalla porque no hemos inicializado 'libeth' para el anillo rx.\n\nSe soluciona tratando las VSIs ICE_VSI_LB un poco más como VSIs PF normales y permitiéndoles tener un 'q_vector'. Es solo un 'dummy', porque la prueba de bucle invertido no usa interrupciones, pero contiene una estructura 'napi' que puede pasarse a 'libeth_rx_fq_create()' llamada desde 'ice_vsi_cfg_rxq()' -&gt; 'ice_rxq_pp_create()'."
    }
  ],
  "lastModified": "2026-06-17T10:21:24.847",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "6.19.7",
              "versionStartIncluding": "6.19.1"
            },
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}