cve-2024-42071
Vulnerability from cvelistv5
Published
2024-07-29 15:52
Modified
2024-11-05 09:36
Severity ?
Summary
ionic: use dev_consume_skb_any outside of napi
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/84b767f9e34fdb143c09e66a2a20722fc2921821Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef7646ed49fff962e97b276f4ab91327a67eeb5aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/84b767f9e34fdb143c09e66a2a20722fc2921821Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ef7646ed49fff962e97b276f4ab91327a67eeb5aPatch
Impacted products
Vendor Product Version
Linux Linux Version: 6.9
Show details on NVD website

To clipboard 

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                "id": "CVE-2024-42071",
                "options": [
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                "timestamp": "2024-09-10T16:19:43.105233Z",
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/pensando/ionic/ionic_dev.h",
            "drivers/net/ethernet/pensando/ionic/ionic_lif.c",
            "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
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          "programFiles": [
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            "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nionic: use dev_consume_skb_any outside of napi\n\nIf we\u0027re not in a NAPI softirq context, we need to be careful\nabout how we call napi_consume_skb(), specifically we need to\ncall it with budget==0 to signal to it that we\u0027re not in a\nsafe context.\n\nThis was found while running some configuration stress testing\nof traffic and a change queue config loop running, and this\ncurious note popped out:\n\n[ 4371.402645] BUG: using smp_processor_id() in preemptible [00000000] code: ethtool/20545\n[ 4371.402897] caller is napi_skb_cache_put+0x16/0x80\n[ 4371.403120] CPU: 25 PID: 20545 Comm: ethtool Kdump: loaded Tainted: G           OE      6.10.0-rc3-netnext+ #8\n[ 4371.403302] Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 01/23/2021\n[ 4371.403460] Call Trace:\n[ 4371.403613]  \u003cTASK\u003e\n[ 4371.403758]  dump_stack_lvl+0x4f/0x70\n[ 4371.403904]  check_preemption_disabled+0xc1/0xe0\n[ 4371.404051]  napi_skb_cache_put+0x16/0x80\n[ 4371.404199]  ionic_tx_clean+0x18a/0x240 [ionic]\n[ 4371.404354]  ionic_tx_cq_service+0xc4/0x200 [ionic]\n[ 4371.404505]  ionic_tx_flush+0x15/0x70 [ionic]\n[ 4371.404653]  ? ionic_lif_qcq_deinit.isra.23+0x5b/0x70 [ionic]\n[ 4371.404805]  ionic_txrx_deinit+0x71/0x190 [ionic]\n[ 4371.404956]  ionic_reconfigure_queues+0x5f5/0xff0 [ionic]\n[ 4371.405111]  ionic_set_ringparam+0x2e8/0x3e0 [ionic]\n[ 4371.405265]  ethnl_set_rings+0x1f1/0x300\n[ 4371.405418]  ethnl_default_set_doit+0xbb/0x160\n[ 4371.405571]  genl_family_rcv_msg_doit+0xff/0x130\n\t[...]\n\nI found that ionic_tx_clean() calls napi_consume_skb() which calls\nnapi_skb_cache_put(), but before that last call is the note\n    /* Zero budget indicate non-NAPI context called us, like netpoll */\nand\n    DEBUG_NET_WARN_ON_ONCE(!in_softirq());\n\nThose are pretty big hints that we\u0027re doing it wrong.  We can pass a\ncontext hint down through the calls to let ionic_tx_clean() know what\nwe\u0027re doing so it can call napi_consume_skb() correctly."
        }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-42071",
    "datePublished": "2024-07-29T15:52:34.714Z",
    "dateReserved": "2024-07-29T15:50:41.168Z",
    "dateUpdated": "2024-11-05T09:36:50.296Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-42071\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-29T16:15:06.623\",\"lastModified\":\"2024-11-21T09:33:31.883\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nionic: use dev_consume_skb_any outside of napi\\n\\nIf we\u0027re not in a NAPI softirq context, we need to be careful\\nabout how we call napi_consume_skb(), specifically we need to\\ncall it with budget==0 to signal to it that we\u0027re not in a\\nsafe context.\\n\\nThis was found while running some configuration stress testing\\nof traffic and a change queue config loop running, and this\\ncurious note popped out:\\n\\n[ 4371.402645] BUG: using smp_processor_id() in preemptible [00000000] code: ethtool/20545\\n[ 4371.402897] caller is napi_skb_cache_put+0x16/0x80\\n[ 4371.403120] CPU: 25 PID: 20545 Comm: ethtool Kdump: loaded Tainted: G           OE      6.10.0-rc3-netnext+ #8\\n[ 4371.403302] Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 01/23/2021\\n[ 4371.403460] Call Trace:\\n[ 4371.403613]  \u003cTASK\u003e\\n[ 4371.403758]  dump_stack_lvl+0x4f/0x70\\n[ 4371.403904]  check_preemption_disabled+0xc1/0xe0\\n[ 4371.404051]  napi_skb_cache_put+0x16/0x80\\n[ 4371.404199]  ionic_tx_clean+0x18a/0x240 [ionic]\\n[ 4371.404354]  ionic_tx_cq_service+0xc4/0x200 [ionic]\\n[ 4371.404505]  ionic_tx_flush+0x15/0x70 [ionic]\\n[ 4371.404653]  ? ionic_lif_qcq_deinit.isra.23+0x5b/0x70 [ionic]\\n[ 4371.404805]  ionic_txrx_deinit+0x71/0x190 [ionic]\\n[ 4371.404956]  ionic_reconfigure_queues+0x5f5/0xff0 [ionic]\\n[ 4371.405111]  ionic_set_ringparam+0x2e8/0x3e0 [ionic]\\n[ 4371.405265]  ethnl_set_rings+0x1f1/0x300\\n[ 4371.405418]  ethnl_default_set_doit+0xbb/0x160\\n[ 4371.405571]  genl_family_rcv_msg_doit+0xff/0x130\\n\\t[...]\\n\\nI found that ionic_tx_clean() calls napi_consume_skb() which calls\\nnapi_skb_cache_put(), but before that last call is the note\\n    /* Zero budget indicate non-NAPI context called us, like netpoll */\\nand\\n    DEBUG_NET_WARN_ON_ONCE(!in_softirq());\\n\\nThose are pretty big hints that we\u0027re doing it wrong.  We can pass a\\ncontext hint down through the calls to let ionic_tx_clean() know what\\nwe\u0027re doing so it can call napi_consume_skb() correctly.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ionic: usa dev_consume_skb_any fuera de napi. Si no estamos en un contexto de softirq de NAPI, debemos tener cuidado con c\u00f3mo llamamos a napi_consume_skb(), espec\u00edficamente debemos llamarlo con Budget==0 para indicarle que no estamos en un contexto seguro. Esto se encontr\u00f3 mientras se ejecutaban algunas pruebas de estr\u00e9s de configuraci\u00f3n del tr\u00e1fico y se ejecutaba un bucle de configuraci\u00f3n de cola de cambios, y apareci\u00f3 esta nota curiosa: [4371.402645] ERROR: usar smp_processor_id() en c\u00f3digo interrumpible [00000000]: ethtool/20545 [4371.402897] la persona que llama es napi_skb_cache_put+0x16/0x80 [ 4371.403120] CPU: 25 PID: 20545 Comm: ethtool Kdump: loaded Tainted: G OE 6.10.0-rc3-netnext+ #8 [ 4371.403302] Nombre de hardware: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen 10, BIOSU32 23/01/2021 [ 4371.403460] Seguimiento de llamadas: [ 4371.403613]  [ 4371.403758] dump_stack_lvl+0x4f/0x70 [ 4371.403904] check_preemption_disabled+0xc1/0xe0 [ 4371.40405 1] napi_skb_cache_put+0x16/0x80 [ 4371.404199] ionic_tx_clean+0x18a/0x240 [ i\u00f3nico] [4371.404354] ionic_tx_cq_service+0xc4/0x200 [i\u00f3nico] [4371.404505] ionic_tx_flush+0x15/0x70 [i\u00f3nico] [4371.404653]? ionic_lif_qcq_deinit.isra.23+0x5b/0x70 [ionic] [ 4371.404805] ionic_txrx_deinit+0x71/0x190 [ionic] [ 4371.404956] ionic_reconfigure_queues+0x5f5/0xff0 [ionic] [ 4371.4051 11] ionic_set_ringparam+0x2e8/0x3e0 [ionic] [4371.405265] ethnl_set_rings+ 0x1f1/0x300 [ 4371.405418] ethnl_default_set_doit+0xbb/0x160 [ 4371.405571] genl_family_rcv_msg_doit+0xff/0x130 [...] encontr\u00e9 que ionic_tx_clean() llama a napi_consume_skb() que llama a napi_skb_cache_put() , pero antes de esa \u00faltima llamada est\u00e1 la nota /* El presupuesto cero indica que nos llam\u00f3 un contexto que no es NAPI, como netpoll */ y DEBUG_NET_WARN_ON_ONCE(!in_softirq()); Esos son indicios bastante importantes de que lo estamos haciendo mal. Podemos pasar una sugerencia de contexto a trav\u00e9s de las llamadas para que ionic_tx_clean() sepa lo que estamos haciendo para que pueda llamar a napi_consume_skb() correctamente.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-834\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.9\",\"matchCriteriaId\":\"18FE1EAE-C36C-49FC-A5E0-0A661CDC561E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.9.1\",\"versionEndExcluding\":\"6.9.8\",\"matchCriteriaId\":\"1557DCF8-46D3-4910-8B19-5C77412AB681\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/84b767f9e34fdb143c09e66a2a20722fc2921821\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef7646ed49fff962e97b276f4ab91327a67eeb5a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/84b767f9e34fdb143c09e66a2a20722fc2921821\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ef7646ed49fff962e97b276f4ab91327a67eeb5a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
  }
}


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