Vulnerability-Lookup

FKIE_CVE-2024-39502

Vulnerability from fkie_nvd - Published: 2024-07-12 13:15 - Updated: 2026-10-15 01:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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: ionic: fix use after netif_napi_del() When queues are started, netif_napi_add() and napi_enable() are called. If there are 4 queues and only 3 queues are used for the current configuration, only 3 queues' napi should be registered and enabled. The ionic_qcq_enable() checks whether the .poll pointer is not NULL for enabling only the using queue' napi. Unused queues' napi will not be registered by netif_napi_add(), so the .poll pointer indicates NULL. But it couldn't distinguish whether the napi was unregistered or not because netif_napi_del() doesn't reset the .poll pointer to NULL. So, ionic_qcq_enable() calls napi_enable() for the queue, which was unregistered by netif_napi_del(). Reproducer: ethtool -L <interface name> rx 1 tx 1 combined 0 ethtool -L <interface name> rx 0 tx 0 combined 1 ethtool -L <interface name> rx 0 tx 0 combined 4 Splat looks like: kernel BUG at net/core/dev.c:6666! Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 1057 Comm: kworker/3:3 Not tainted 6.10.0-rc2+ #16 Workqueue: events ionic_lif_deferred_work [ionic] RIP: 0010:napi_enable+0x3b/0x40 Code: 48 89 c2 48 83 e2 f6 80 b9 61 09 00 00 00 74 0d 48 83 bf 60 01 00 00 00 74 03 80 ce 01 f0 4f RSP: 0018:ffffb6ed83227d48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff97560cda0828 RCX: 0000000000000029 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff97560cda0a28 RBP: ffffb6ed83227d50 R08: 0000000000000400 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: ffff97560ce3c1a0 R14: 0000000000000000 R15: ffff975613ba0a20 FS: 0000000000000000(0000) GS:ffff975d5f780000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f734ee200 CR3: 0000000103e50000 CR4: 00000000007506f0 PKRU: 55555554 Call Trace: <TASK> ? die+0x33/0x90 ? do_trap+0xd9/0x100 ? napi_enable+0x3b/0x40 ? do_error_trap+0x83/0xb0 ? napi_enable+0x3b/0x40 ? napi_enable+0x3b/0x40 ? exc_invalid_op+0x4e/0x70 ? napi_enable+0x3b/0x40 ? asm_exc_invalid_op+0x16/0x20 ? napi_enable+0x3b/0x40 ionic_qcq_enable+0xb7/0x180 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_start_queues+0xc4/0x290 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_link_status_check+0x11c/0x170 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_lif_deferred_work+0x129/0x280 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] process_one_work+0x145/0x360 worker_thread+0x2bb/0x3d0 ? __pfx_worker_thread+0x10/0x10 kthread+0xcc/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2d/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0d19267cb150e8f76ade210e16ee820a77f684e7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/183ebc167a8a19e916b885d4bb61a3491991bfa5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/60cd714871cd5a683353a355cbb17a685245cf84	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/79f18a41dd056115d685f3b0a419c7cd40055e13	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8edd18dab443863e9e48f084e7f123fca3065e4e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a87d72b37b9ec2c1e18fe36b09241d8b30334a2e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ff9c2a9426ecf5b9631e9fd74993b357262387d6	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/0d19267cb150e8f76ade210e16ee820a77f684e7	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/183ebc167a8a19e916b885d4bb61a3491991bfa5	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/60cd714871cd5a683353a355cbb17a685245cf84	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/79f18a41dd056115d685f3b0a419c7cd40055e13	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/8edd18dab443863e9e48f084e7f123fca3065e4e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/a87d72b37b9ec2c1e18fe36b09241d8b30334a2e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/ff9c2a9426ecf5b9631e9fd74993b357262387d6	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-265688.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-355557.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-613116.html

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	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10

JSON

To clipboard

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              "version": "0",
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            },
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              "status": "unaffected",
              "version": "5.15.162",
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              "lessThanOrEqual": "6.1.*",
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              "version": "6.1.95",
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              "version": "6.6.35",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
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          "defaultStatus": "unknown",
          "product": "RUGGEDCOM RST2428P",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V3.1",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
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            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
          "vendor": "Siemens",
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              "lessThan": "V3.1",
              "status": "affected",
              "version": "0",
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            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
          "vendor": "Siemens",
          "versions": [
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              "lessThan": "V1.1.1",
              "status": "affected",
              "version": "0",
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            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nionic: fix use after netif_napi_del()\n\nWhen queues are started, netif_napi_add() and napi_enable() are called.\nIf there are 4 queues and only 3 queues are used for the current\nconfiguration, only 3 queues\u0027 napi should be registered and enabled.\nThe ionic_qcq_enable() checks whether the .poll pointer is not NULL for\nenabling only the using queue\u0027 napi. Unused queues\u0027 napi will not be\nregistered by netif_napi_add(), so the .poll pointer indicates NULL.\nBut it couldn\u0027t distinguish whether the napi was unregistered or not\nbecause netif_napi_del() doesn\u0027t reset the .poll pointer to NULL.\nSo, ionic_qcq_enable() calls napi_enable() for the queue, which was\nunregistered by netif_napi_del().\n\nReproducer:\n   ethtool -L \u003cinterface name\u003e rx 1 tx 1 combined 0\n   ethtool -L \u003cinterface name\u003e rx 0 tx 0 combined 1\n   ethtool -L \u003cinterface name\u003e rx 0 tx 0 combined 4\n\nSplat looks like:\nkernel BUG at net/core/dev.c:6666!\nOops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 3 PID: 1057 Comm: kworker/3:3 Not tainted 6.10.0-rc2+ #16\nWorkqueue: events ionic_lif_deferred_work [ionic]\nRIP: 0010:napi_enable+0x3b/0x40\nCode: 48 89 c2 48 83 e2 f6 80 b9 61 09 00 00 00 74 0d 48 83 bf 60 01 00 00 00 74 03 80 ce 01 f0 4f\nRSP: 0018:ffffb6ed83227d48 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffff97560cda0828 RCX: 0000000000000029\nRDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff97560cda0a28\nRBP: ffffb6ed83227d50 R08: 0000000000000400 R09: 0000000000000001\nR10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000\nR13: ffff97560ce3c1a0 R14: 0000000000000000 R15: ffff975613ba0a20\nFS:  0000000000000000(0000) GS:ffff975d5f780000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f8f734ee200 CR3: 0000000103e50000 CR4: 00000000007506f0\nPKRU: 55555554\nCall Trace:\n \u003cTASK\u003e\n ? die+0x33/0x90\n ? do_trap+0xd9/0x100\n ? napi_enable+0x3b/0x40\n ? do_error_trap+0x83/0xb0\n ? napi_enable+0x3b/0x40\n ? napi_enable+0x3b/0x40\n ? exc_invalid_op+0x4e/0x70\n ? napi_enable+0x3b/0x40\n ? asm_exc_invalid_op+0x16/0x20\n ? napi_enable+0x3b/0x40\n ionic_qcq_enable+0xb7/0x180 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n ionic_start_queues+0xc4/0x290 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n ionic_link_status_check+0x11c/0x170 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n ionic_lif_deferred_work+0x129/0x280 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n process_one_work+0x145/0x360\n worker_thread+0x2bb/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xcc/0x100\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ionic: corrige el use after de netif_napi_del() Cuando se inician las colas, se llama a netif_napi_add() y napi_enable(). Si hay 4 colas y solo se utilizan 3 colas para la configuraci\u00f3n actual, solo se deben registrar y habilitar napi de 3 colas. ionic_qcq_enable() comprueba si el puntero .poll no es NULL para habilitar solo el napi de la cola de uso. netif_napi_add() no registrar\u00e1 el napi de las colas no utilizadas, por lo que el puntero .poll indica NULL. Pero no pudo distinguir si el napi no estaba registrado o no porque netif_napi_del() no restablece el puntero .poll a NULL. Entonces, ionic_qcq_enable() llama a napi_enable() para la cola, que netif_napi_del() cancel\u00f3 el registro. Reproductor: ethtool -L  rx 1 tx 1 combinado 0 ethtool -L  rx 0 tx 0 combinado 1 ethtool -L  rx 0 tx 0 combinado 4 Splat se parece a: kernel ERROR en net/ n\u00facleo/dev.c:6666! Vaya: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 1057 Comm: kworker/3:3 No contaminado 6.10.0-rc2+ #16 Cola de trabajo: eventos ionic_lif_deferred_work [ionic] RIP: 0010:napi_enable+0x3b/ 0x40 C\u00f3digo: 48 89 c2 48 83 e2 f6 80 b9 61 09 00 00 00 74 0d 48 83 bf 60 01 00 00 00 74 03 80 ce 01 f0 4f RSP: 0018:ffffb6ed83227d48 EFLAGS: 10246 RAX: 0000000000000000 RBX: ffff97560cda0828 RCX: 0000000000000029 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff97560cda0a28 RBP: ffffb6ed83227d50 R08: 0000000000000400 R09: 00000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: ffff97560ce3c1a0 R14: 0000000000000000 R15: 13ba0a20 FS: 0000000000000000(0000) GS:ffff975d5f780000(0000) knlGS :0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f734ee200 CR3: 0000000103e50000 CR4: 00000000007506f0 PKRU: 5555554 Seguimiento de llamadas: ? morir+0x33/0x90? do_trap+0xd9/0x100? napi_enable+0x3b/0x40? do_error_trap+0x83/0xb0? napi_enable+0x3b/0x40? napi_enable+0x3b/0x40? exc_invalid_op+0x4e/0x70? napi_enable+0x3b/0x40? asm_exc_invalid_op+0x16/0x20? napi_enable+0x3b/0x40 ionic_qcq_enable+0xb7/0x180 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_start_queues+0xc4/0x290 [ionic 59bdfc8a035436e1c4224 ff7d10789e3f14643f8] ionic_link_status_check+0x11c/0x170 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_lif_deferred_work+0x129/0x280 [ionic 59bdfc8a03543 6e1c4224ff7d10789e3f14643f8] proceso_one_work+0x145/0x360 trabajador_thread+0x2bb/ 0x3d0? __pfx_worker_thread+0x10/0x10 kthread+0xcc/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2d/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30"
    }
  ],
  "id": "CVE-2024-39502",
  "lastModified": "2026-10-15T01:18:34.700",
  "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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CVE-2024-39502 (GCVE-0-2024-39502)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2026-10-15 00:44

Title

ionic: fix use after netif_napi_del()

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:07 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

11 references

URL	Tags
https://git.kernel.org/stable/c/0d19267cb150e8f76…
https://git.kernel.org/stable/c/ff9c2a9426ecf5b96…
https://git.kernel.org/stable/c/8edd18dab443863e9…
https://git.kernel.org/stable/c/60cd714871cd5a683…
https://git.kernel.org/stable/c/183ebc167a8a19e91…
https://git.kernel.org/stable/c/a87d72b37b9ec2c1e…
https://git.kernel.org/stable/c/79f18a41dd056115d…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

6 products

Vendor	Product	Version
Linux	Linux	Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < 0d19267cb150e8f76ade210e16ee820a77f684e7 (git) Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < ff9c2a9426ecf5b9631e9fd74993b357262387d6 (git) Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < 8edd18dab443863e9e48f084e7f123fca3065e4e (git) Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < 60cd714871cd5a683353a355cbb17a685245cf84 (git) Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < 183ebc167a8a19e916b885d4bb61a3491991bfa5 (git) Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < a87d72b37b9ec2c1e18fe36b09241d8b30334a2e (git) Affected: 0f3154e6bcb354968cc04f7cd86ce466f7b9a814 , < 79f18a41dd056115d685f3b0a419c7cd40055e13 (git)
Linux	Linux	Affected: 5.4 Unaffected: 0 , < 5.4 (semver) Unaffected: 5.4.279 , ≤ 5.4.* (semver) Unaffected: 5.10.221 , ≤ 5.10.* (semver) Unaffected: 5.15.162 , ≤ 5.15.* (semver) Unaffected: 6.1.95 , ≤ 6.1.* (semver) Unaffected: 6.6.35 , ≤ 6.6.* (semver) Unaffected: 6.9.6 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Siemens	RUGGEDCOM RST2428P	Affected: 0 , < V3.1 (custom)
Siemens	SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family	Unaffected: 0 , < * (custom)
Siemens	SCALANCE XCM-/XRM-/XCH-/XRH-300 family	Affected: 0 , < V3.1 (custom)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < V1.1.1 (custom)

Show details on NVD website

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To clipboard

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nionic: fix use after netif_napi_del()\n\nWhen queues are started, netif_napi_add() and napi_enable() are called.\nIf there are 4 queues and only 3 queues are used for the current\nconfiguration, only 3 queues\u0027 napi should be registered and enabled.\nThe ionic_qcq_enable() checks whether the .poll pointer is not NULL for\nenabling only the using queue\u0027 napi. Unused queues\u0027 napi will not be\nregistered by netif_napi_add(), so the .poll pointer indicates NULL.\nBut it couldn\u0027t distinguish whether the napi was unregistered or not\nbecause netif_napi_del() doesn\u0027t reset the .poll pointer to NULL.\nSo, ionic_qcq_enable() calls napi_enable() for the queue, which was\nunregistered by netif_napi_del().\n\nReproducer:\n   ethtool -L \u003cinterface name\u003e rx 1 tx 1 combined 0\n   ethtool -L \u003cinterface name\u003e rx 0 tx 0 combined 1\n   ethtool -L \u003cinterface name\u003e rx 0 tx 0 combined 4\n\nSplat looks like:\nkernel BUG at net/core/dev.c:6666!\nOops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 3 PID: 1057 Comm: kworker/3:3 Not tainted 6.10.0-rc2+ #16\nWorkqueue: events ionic_lif_deferred_work [ionic]\nRIP: 0010:napi_enable+0x3b/0x40\nCode: 48 89 c2 48 83 e2 f6 80 b9 61 09 00 00 00 74 0d 48 83 bf 60 01 00 00 00 74 03 80 ce 01 f0 4f\nRSP: 0018:ffffb6ed83227d48 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffff97560cda0828 RCX: 0000000000000029\nRDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff97560cda0a28\nRBP: ffffb6ed83227d50 R08: 0000000000000400 R09: 0000000000000001\nR10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000\nR13: ffff97560ce3c1a0 R14: 0000000000000000 R15: ffff975613ba0a20\nFS:  0000000000000000(0000) GS:ffff975d5f780000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f8f734ee200 CR3: 0000000103e50000 CR4: 00000000007506f0\nPKRU: 55555554\nCall Trace:\n \u003cTASK\u003e\n ? die+0x33/0x90\n ? do_trap+0xd9/0x100\n ? napi_enable+0x3b/0x40\n ? do_error_trap+0x83/0xb0\n ? napi_enable+0x3b/0x40\n ? napi_enable+0x3b/0x40\n ? exc_invalid_op+0x4e/0x70\n ? napi_enable+0x3b/0x40\n ? asm_exc_invalid_op+0x16/0x20\n ? napi_enable+0x3b/0x40\n ionic_qcq_enable+0xb7/0x180 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n ionic_start_queues+0xc4/0x290 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n ionic_link_status_check+0x11c/0x170 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n ionic_lif_deferred_work+0x129/0x280 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]\n process_one_work+0x145/0x360\n worker_thread+0x2bb/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xcc/0x100\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2d/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The trigger is a local `ethtool -L` operation on the netdev, delivered via the ethtool ioctl or the ethtool generic-netlink family \u2014 no network packet from a remote peer reaches the vulnerable code. Attack requires local access to the system or container hosting the ionic netdev.\nAC:L - The upstream reproducer is a deterministic three-command sequence (`ethtool -L ... rx 1 tx 1 combined 0`, then `combined 1`, then `combined 4`) with no race and no dependence on memory layout or system state the attacker cannot influence. The link-status event that drives the crashing deferred work is generated by the reconfiguration itself via `ionic_link_status_check_request()`.\nPR:L - Both entry points gate on namespace-relative CAP_NET_ADMIN (`ns_capable(net-\u003euser_ns, CAP_NET_ADMIN)` in net/ethtool/ioctl.c:2912 and `GENL_UNS_ADMIN_PERM` in net/ethtool/netlink.c:921), which an unprivileged user holds inside their own user namespace. ionic exposes SR-IOV VFs that are routinely delegated into container network namespaces by SR-IOV CNI, so a basic container user reaches `ionic_set_channels` without any host-root privilege.\nUI:N - The entire sequence is attacker-driven from a single process; no administrator or victim action is needed. The queue restart that reaches `ionic_qcq_enable()` is triggered automatically by the attacker\u0027s own reconfiguration.\nS:U - The corruption and the crash are confined to the kernel\u0027s own security authority \u2014 there is no hypervisor, IOMMU, or DMA boundary being crossed. This is standard in-kernel memory corruption, so the vulnerable component and impacted component share one authority.\nC:H - Re-enabling a NAPI that `netif_napi_del()` already unlinked leaves it schedulable from the still-registered IRQ while the containing `struct ionic_qcq` is `devm_kfree()`d, so `net_rx_action()` polls freed slab memory \u2014 a use-after-free that yields an arbitrary kernel-memory read primitive once the object is resprayed.\nI:H - The same use-after-free makes `n-\u003epoll` an indirect call through freed, attacker-sprayable slab memory, giving a control-flow-hijack and arbitrary-write primitive. Per UAF scoring guidance this is High integrity impact, not a mere crash.\nA:H - `napi_enable()` hits `BUG_ON(!test_bit(NAPI_STATE_SCHED, \u0026val))` (net/core/dev.c:6665) and kills the kworker while it holds `lif-\u003equeue_lock`, which is then leaked permanently \u2014 every subsequent `ionic_open`/`ionic_stop`/ethtool path blocks on it while holding `rtnl_lock`, deadlocking the whole networking control plane until reboot (immediate panic with `panic_on_oops=1`)."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:33:48.153Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0d19267cb150e8f76ade210e16ee820a77f684e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff9c2a9426ecf5b9631e9fd74993b357262387d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/8edd18dab443863e9e48f084e7f123fca3065e4e"
        },
        {
          "url": "https://git.kernel.org/stable/c/60cd714871cd5a683353a355cbb17a685245cf84"
        },
        {
          "url": "https://git.kernel.org/stable/c/183ebc167a8a19e916b885d4bb61a3491991bfa5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a87d72b37b9ec2c1e18fe36b09241d8b30334a2e"
        },
        {
          "url": "https://git.kernel.org/stable/c/79f18a41dd056115d685f3b0a419c7cd40055e13"
        }
      ],
      "title": "ionic: fix use after netif_napi_del()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-39502",
    "datePublished": "2024-07-12T12:20:35.635Z",
    "dateReserved": "2024-06-25T14:23:23.752Z",
    "dateUpdated": "2026-10-15T00:44:33.877Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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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.

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