Vulnerability-Lookup

FKIE_CVE-2025-71087

Vulnerability from fkie_nvd - Published: 2026-01-13 16:16 - Updated: 2026-10-19 19:17

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: iavf: fix off-by-one issues in iavf_config_rss_reg() There are off-by-one bugs when configuring RSS hash key and lookup table, causing out-of-bounds reads to memory [1] and out-of-bounds writes to device registers. Before commit 43a3d9ba34c9 ("i40evf: Allow PF driver to configure RSS"), the loop upper bounds were: i <= I40E_VFQF_{HKEY,HLUT}_MAX_INDEX which is safe since the value is the last valid index. That commit changed the bounds to: i <= adapter->rss_{key,lut}_size / 4 where `rss_{key,lut}_size / 4` is the number of dwords, so the last valid index is `(rss_{key,lut}_size / 4) - 1`. Therefore, using `<=` accesses one element past the end. Fix the issues by using `<` instead of `<=`, ensuring we do not exceed the bounds. [1] KASAN splat about rss_key_size off-by-one BUG: KASAN: slab-out-of-bounds in iavf_config_rss+0x619/0x800 Read of size 4 at addr ffff888102c50134 by task kworker/u8:6/63 CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:6 Not tainted 6.18.0-rc2-enjuk-tnguy-00378-g3005f5b77652-dirty #156 PREEMPT(voluntary) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: iavf iavf_watchdog_task Call Trace: <TASK> dump_stack_lvl+0x6f/0xb0 print_report+0x170/0x4f3 kasan_report+0xe1/0x1a0 iavf_config_rss+0x619/0x800 iavf_watchdog_task+0x2be7/0x3230 process_one_work+0x7fd/0x1420 worker_thread+0x4d1/0xd40 kthread+0x344/0x660 ret_from_fork+0x249/0x320 ret_from_fork_asm+0x1a/0x30 </TASK> Allocated by task 63: kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_noprof+0x246/0x6f0 iavf_watchdog_task+0x28fc/0x3230 process_one_work+0x7fd/0x1420 worker_thread+0x4d1/0xd40 kthread+0x344/0x660 ret_from_fork+0x249/0x320 ret_from_fork_asm+0x1a/0x30 The buggy address belongs to the object at ffff888102c50100 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes to the right of allocated 52-byte region [ffff888102c50100, ffff888102c50134) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c50 flags: 0x200000000000000(node=0|zone=2) page_type: f5(slab) raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888102c50000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ffff888102c50080: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc >ffff888102c50100: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc ^ ffff888102c50180: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff888102c50200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/18de0e41d69d97fab10b91fecf10ae78a5e43232	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3095228e1320371e143835d0cebeef1a8a754c66	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5bb18bfd505ca1affbca921462c350095a6c798c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6daa2893f323981c7894c68440823326e93a7d61	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ceb8459df28d22c225a82d74c0f725f2a935d194	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d7369dc8dd7cbf5cee3a22610028d847b6f02982	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f36de3045d006e6d9be1be495f2ed88d1721e752	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	4.7
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/iavf/iavf_main.c"
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          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
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            {
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              "status": "unaffected",
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            {
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              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: fix off-by-one issues in iavf_config_rss_reg()\n\nThere are off-by-one bugs when configuring RSS hash key and lookup\ntable, causing out-of-bounds reads to memory [1] and out-of-bounds\nwrites to device registers.\n\nBefore commit 43a3d9ba34c9 (\"i40evf: Allow PF driver to configure RSS\"),\nthe loop upper bounds were:\n    i \u003c= I40E_VFQF_{HKEY,HLUT}_MAX_INDEX\nwhich is safe since the value is the last valid index.\n\nThat commit changed the bounds to:\n    i \u003c= adapter-\u003erss_{key,lut}_size / 4\nwhere `rss_{key,lut}_size / 4` is the number of dwords, so the last\nvalid index is `(rss_{key,lut}_size / 4) - 1`. Therefore, using `\u003c=`\naccesses one element past the end.\n\nFix the issues by using `\u003c` instead of `\u003c=`, ensuring we do not exceed\nthe bounds.\n\n[1] KASAN splat about rss_key_size off-by-one\n  BUG: KASAN: slab-out-of-bounds in iavf_config_rss+0x619/0x800\n  Read of size 4 at addr ffff888102c50134 by task kworker/u8:6/63\n\n  CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:6 Not tainted 6.18.0-rc2-enjuk-tnguy-00378-g3005f5b77652-dirty #156 PREEMPT(voluntary)\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n  Workqueue: iavf iavf_watchdog_task\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x6f/0xb0\n   print_report+0x170/0x4f3\n   kasan_report+0xe1/0x1a0\n   iavf_config_rss+0x619/0x800\n   iavf_watchdog_task+0x2be7/0x3230\n   process_one_work+0x7fd/0x1420\n   worker_thread+0x4d1/0xd40\n   kthread+0x344/0x660\n   ret_from_fork+0x249/0x320\n   ret_from_fork_asm+0x1a/0x30\n   \u003c/TASK\u003e\n\n  Allocated by task 63:\n   kasan_save_stack+0x30/0x50\n   kasan_save_track+0x14/0x30\n   __kasan_kmalloc+0x7f/0x90\n   __kmalloc_noprof+0x246/0x6f0\n   iavf_watchdog_task+0x28fc/0x3230\n   process_one_work+0x7fd/0x1420\n   worker_thread+0x4d1/0xd40\n   kthread+0x344/0x660\n   ret_from_fork+0x249/0x320\n   ret_from_fork_asm+0x1a/0x30\n\n  The buggy address belongs to the object at ffff888102c50100\n   which belongs to the cache kmalloc-64 of size 64\n  The buggy address is located 0 bytes to the right of\n   allocated 52-byte region [ffff888102c50100, ffff888102c50134)\n\n  The buggy address belongs to the physical page:\n  page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c50\n  flags: 0x200000000000000(node=0|zone=2)\n  page_type: f5(slab)\n  raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000\n  raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000\n  page dumped because: kasan: bad access detected\n\n  Memory state around the buggy address:\n   ffff888102c50000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc\n   ffff888102c50080: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc\n  \u003effff888102c50100: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc\n                                       ^\n   ffff888102c50180: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc\n   ffff888102c50200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\niavf: corrige problemas de \u0027off-by-one\u0027 en iavf_config_rss_reg()\n\nExisten errores de \u0027off-by-one\u0027 al configurar la clave hash RSS y la tabla de b\u00fasqueda, causando lecturas fuera de l\u00edmites a la memoria [1] y escrituras fuera de l\u00edmites a los registros del dispositivo.\n\nAntes del commit 43a3d9ba34c9 (\u0027i40evf: Permitir al controlador PF configurar RSS\u0027), los l\u00edmites superiores del bucle eran:\n    i \u0026lt;= I40E_VFQF_{HKEY,HLUT}_MAX_INDEX\nlo cual es seguro ya que el valor es el \u00faltimo \u00edndice v\u00e1lido.\n\nEse commit cambi\u00f3 los l\u00edmites a:\n    i \u0026lt;= adapter-\u0026gt;rss_{key,lut}_size / 4\ndonde \u0027rss_{key,lut}_size / 4\u0027 es el n\u00famero de dwords, por lo que el \u00faltimo \u00edndice v\u00e1lido es \u0027(rss_{key,lut}_size / 4) - 1\u0027. Por lo tanto, usar \u0027\u0026lt;=\u0027 accede a un elemento m\u00e1s all\u00e1 del final.\n\nSe corrigen los problemas usando \u0027\u0026lt;\u0027 en lugar de \u0027\u0026lt;=\u0027, asegurando que no excedemos los l\u00edmites.\n\n[1] Informe de KASAN sobre el \u0027off-by-one\u0027 de rss_key_size\n  ERROR: KASAN: \u0027slab-out-of-bounds\u0027 en iavf_config_rss+0x619/0x800\n  Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff888102c50134 por la tarea kworker/u8:6/63\n\n  CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:6 No contaminado 6.18.0-rc2-enjuk-tnguy-00378-g3005f5b77652-dirty #156 PREEMPT(voluntario)\n  Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n  Cola de trabajo: iavf iavf_watchdog_task\n  Traza de llamadas:\n   \n   dump_stack_lvl+0x6f/0xb0\n   print_report+0x170/0x4f3\n   kasan_report+0xe1/0x1a0\n   iavf_config_rss+0x619/0x800\n   iavf_watchdog_task+0x2be7/0x3230\n   process_one_work+0x7fd/0x1420\n   worker_thread+0x4d1/0xd40\n   kthread+0x344/0x660\n   ret_from_fork+0x249/0x320\n   ret_from_fork_asm+0x1a/0x30\n   \n\n  Asignado por la tarea 63:\n   kasan_save_stack+0x30/0x50\n   kasan_save_track+0x14/0x30\n   __kasan_kmalloc+0x7f/0x90\n   __kmalloc_noprof+0x246/0x6f0\n   iavf_watchdog_task+0x28fc/0x3230\n   process_one_work+0x7fd/0x1420\n   worker_thread+0x4d1/0xd40\n   kthread+0x344/0x660\n   ret_from_fork+0x249/0x320\n   ret_from_fork_asm+0x1a/0x30\n\n  La direcci\u00f3n con error pertenece al objeto en ffff888102c50100\n   el cual pertenece a la cach\u00e9 kmalloc-64 de tama\u00f1o 64\n  La direcci\u00f3n con error est\u00e1 ubicada 0 bytes a la derecha de\n   la regi\u00f3n asignada de 52 bytes [ffff888102c50100, ffff888102c50134)\n\n  La direcci\u00f3n con error pertenece a la p\u00e1gina f\u00edsica:\n  p\u00e1gina: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c50\n  flags: 0x200000000000000(node=0|zone=2)\n  page_type: f5(slab)\n  raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000\n  raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000\n  p\u00e1gina volcada porque: kasan: acceso incorrecto detectado\n\n  Estado de la memoria alrededor de la direcci\u00f3n con error:\n   ffff888102c50000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc\n   ffff888102c50080: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc\n  \u0026gt;ffff888102c50100: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc\n                                       ^\n   ffff888102c50180: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc\n   ffff888102c50200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc"
    }
  ],
  "id": "CVE-2025-71087",
  "lastModified": "2026-10-19T19:17:10.410",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-71087",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-10T20:41:36.543195Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-13T16:16:08.343",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/18de0e41d69d97fab10b91fecf10ae78a5e43232"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3095228e1320371e143835d0cebeef1a8a754c66"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/5bb18bfd505ca1affbca921462c350095a6c798c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/6daa2893f323981c7894c68440823326e93a7d61"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/ceb8459df28d22c225a82d74c0f725f2a935d194"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "Patch"
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      "url": "https://git.kernel.org/stable/c/d7369dc8dd7cbf5cee3a22610028d847b6f02982"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f36de3045d006e6d9be1be495f2ed88d1721e752"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-193"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

CVE-2025-71087 (GCVE-0-2025-71087)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:34 – Updated: 2026-10-19 18:15

Title

iavf: fix off-by-one issues in iavf_config_rss_reg()

Summary

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-10 20:41 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6794 records in the last 180 days details

References

7 references

URL	Tags
https://git.kernel.org/stable/c/ceb8459df28d22c22…
https://git.kernel.org/stable/c/5bb18bfd505ca1aff…
https://git.kernel.org/stable/c/d7369dc8dd7cbf5ce…
https://git.kernel.org/stable/c/18de0e41d69d97fab…
https://git.kernel.org/stable/c/f36de3045d006e6d9…
https://git.kernel.org/stable/c/3095228e1320371e1…
https://git.kernel.org/stable/c/6daa2893f323981c7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < ceb8459df28d22c225a82d74c0f725f2a935d194 (git) Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < 5bb18bfd505ca1affbca921462c350095a6c798c (git) Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < d7369dc8dd7cbf5cee3a22610028d847b6f02982 (git) Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < 18de0e41d69d97fab10b91fecf10ae78a5e43232 (git) Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < f36de3045d006e6d9be1be495f2ed88d1721e752 (git) Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < 3095228e1320371e143835d0cebeef1a8a754c66 (git) Affected: 43a3d9ba34c9ca313573201d3f45de5ab3494cec , < 6daa2893f323981c7894c68440823326e93a7d61 (git)
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.4 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-71087",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T20:41:36.543195Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T18:15:11.876Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/iavf/iavf_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ceb8459df28d22c225a82d74c0f725f2a935d194",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            },
            {
              "lessThan": "5bb18bfd505ca1affbca921462c350095a6c798c",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            },
            {
              "lessThan": "d7369dc8dd7cbf5cee3a22610028d847b6f02982",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            },
            {
              "lessThan": "18de0e41d69d97fab10b91fecf10ae78a5e43232",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            },
            {
              "lessThan": "f36de3045d006e6d9be1be495f2ed88d1721e752",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            },
            {
              "lessThan": "3095228e1320371e143835d0cebeef1a8a754c66",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            },
            {
              "lessThan": "6daa2893f323981c7894c68440823326e93a7d61",
              "status": "affected",
              "version": "43a3d9ba34c9ca313573201d3f45de5ab3494cec",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/iavf/iavf_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.248",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.198",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.4",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: fix off-by-one issues in iavf_config_rss_reg()\n\nThere are off-by-one bugs when configuring RSS hash key and lookup\ntable, causing out-of-bounds reads to memory [1] and out-of-bounds\nwrites to device registers.\n\nBefore commit 43a3d9ba34c9 (\"i40evf: Allow PF driver to configure RSS\"),\nthe loop upper bounds were:\n    i \u003c= I40E_VFQF_{HKEY,HLUT}_MAX_INDEX\nwhich is safe since the value is the last valid index.\n\nThat commit changed the bounds to:\n    i \u003c= adapter-\u003erss_{key,lut}_size / 4\nwhere `rss_{key,lut}_size / 4` is the number of dwords, so the last\nvalid index is `(rss_{key,lut}_size / 4) - 1`. Therefore, using `\u003c=`\naccesses one element past the end.\n\nFix the issues by using `\u003c` instead of `\u003c=`, ensuring we do not exceed\nthe bounds.\n\n[1] KASAN splat about rss_key_size off-by-one\n  BUG: KASAN: slab-out-of-bounds in iavf_config_rss+0x619/0x800\n  Read of size 4 at addr ffff888102c50134 by task kworker/u8:6/63\n\n  CPU: 0 UID: 0 PID: 63 Comm: kworker/u8:6 Not tainted 6.18.0-rc2-enjuk-tnguy-00378-g3005f5b77652-dirty #156 PREEMPT(voluntary)\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n  Workqueue: iavf iavf_watchdog_task\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x6f/0xb0\n   print_report+0x170/0x4f3\n   kasan_report+0xe1/0x1a0\n   iavf_config_rss+0x619/0x800\n   iavf_watchdog_task+0x2be7/0x3230\n   process_one_work+0x7fd/0x1420\n   worker_thread+0x4d1/0xd40\n   kthread+0x344/0x660\n   ret_from_fork+0x249/0x320\n   ret_from_fork_asm+0x1a/0x30\n   \u003c/TASK\u003e\n\n  Allocated by task 63:\n   kasan_save_stack+0x30/0x50\n   kasan_save_track+0x14/0x30\n   __kasan_kmalloc+0x7f/0x90\n   __kmalloc_noprof+0x246/0x6f0\n   iavf_watchdog_task+0x28fc/0x3230\n   process_one_work+0x7fd/0x1420\n   worker_thread+0x4d1/0xd40\n   kthread+0x344/0x660\n   ret_from_fork+0x249/0x320\n   ret_from_fork_asm+0x1a/0x30\n\n  The buggy address belongs to the object at ffff888102c50100\n   which belongs to the cache kmalloc-64 of size 64\n  The buggy address is located 0 bytes to the right of\n   allocated 52-byte region [ffff888102c50100, ffff888102c50134)\n\n  The buggy address belongs to the physical page:\n  page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102c50\n  flags: 0x200000000000000(node=0|zone=2)\n  page_type: f5(slab)\n  raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000\n  raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000\n  page dumped because: kasan: bad access detected\n\n  Memory state around the buggy address:\n   ffff888102c50000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc\n   ffff888102c50080: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc\n  \u003effff888102c50100: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc\n                                       ^\n   ffff888102c50180: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc\n   ffff888102c50200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:54:29.688Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ceb8459df28d22c225a82d74c0f725f2a935d194"
        },
        {
          "url": "https://git.kernel.org/stable/c/5bb18bfd505ca1affbca921462c350095a6c798c"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7369dc8dd7cbf5cee3a22610028d847b6f02982"
        },
        {
          "url": "https://git.kernel.org/stable/c/18de0e41d69d97fab10b91fecf10ae78a5e43232"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/6daa2893f323981c7894c68440823326e93a7d61"
        }
      ],
      "title": "iavf: fix off-by-one issues in iavf_config_rss_reg()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71087",
    "datePublished": "2026-01-13T15:34:49.691Z",
    "dateReserved": "2026-01-13T15:30:19.649Z",
    "dateUpdated": "2026-10-19T18:15:11.876Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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