cve-2024-40957
Vulnerability from cvelistv5
Published
2024-07-12 12:31
Modified
2024-11-05 09:33
Severity ?
Summary
seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4Patch
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nseg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors\n\ninput_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for\nPREROUTING hook, in PREROUTING hook, we should passing a valid indev,\nand a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer\ndereference, as below:\n\n    [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090\n    [74830.655633] #PF: supervisor read access in kernel mode\n    [74830.657888] #PF: error_code(0x0000) - not-present page\n    [74830.659500] PGD 0 P4D 0\n    [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI\n    ...\n    [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\n    [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n    ...\n    [74830.689725] Call Trace:\n    [74830.690402]  \u003cIRQ\u003e\n    [74830.690953]  ? show_trace_log_lvl+0x1c4/0x2df\n    [74830.692020]  ? show_trace_log_lvl+0x1c4/0x2df\n    [74830.693095]  ? ipt_do_table+0x286/0x710 [ip_tables]\n    [74830.694275]  ? __die_body.cold+0x8/0xd\n    [74830.695205]  ? page_fault_oops+0xac/0x140\n    [74830.696244]  ? exc_page_fault+0x62/0x150\n    [74830.697225]  ? asm_exc_page_fault+0x22/0x30\n    [74830.698344]  ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]\n    [74830.699540]  ipt_do_table+0x286/0x710 [ip_tables]\n    [74830.700758]  ? ip6_route_input+0x19d/0x240\n    [74830.701752]  nf_hook_slow+0x3f/0xb0\n    [74830.702678]  input_action_end_dx4+0x19b/0x1e0\n    [74830.703735]  ? input_action_end_t+0xe0/0xe0\n    [74830.704734]  seg6_local_input_core+0x2d/0x60\n    [74830.705782]  lwtunnel_input+0x5b/0xb0\n    [74830.706690]  __netif_receive_skb_one_core+0x63/0xa0\n    [74830.707825]  process_backlog+0x99/0x140\n    [74830.709538]  __napi_poll+0x2c/0x160\n    [74830.710673]  net_rx_action+0x296/0x350\n    [74830.711860]  __do_softirq+0xcb/0x2ac\n    [74830.713049]  do_softirq+0x63/0x90\n\ninput_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally\ntrigger a NULL dereference in rpfilter_mt()-\u003erpfilter_is_loopback():\n\n    static bool\n    rpfilter_is_loopback(const struct sk_buff *skb,\n          \t       const struct net_device *in)\n    {\n            // in is NULL\n            return skb-\u003epkt_type == PACKET_LOOPBACK ||\n          \t in-\u003eflags \u0026 IFF_LOOPBACK;\n    }"
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      "title": "seg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-40957",
    "datePublished": "2024-07-12T12:31:59.747Z",
    "dateReserved": "2024-07-12T12:17:45.593Z",
    "dateUpdated": "2024-11-05T09:33:55.069Z",
    "state": "PUBLISHED"
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  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40957\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:17.823\",\"lastModified\":\"2024-08-28T18:58:59.793\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nseg6: fix parameter passing when calling NF_HOOK() in End.DX4 and End.DX6 behaviors\\n\\ninput_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for\\nPREROUTING hook, in PREROUTING hook, we should passing a valid indev,\\nand a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer\\ndereference, as below:\\n\\n    [74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090\\n    [74830.655633] #PF: supervisor read access in kernel mode\\n    [74830.657888] #PF: error_code(0x0000) - not-present page\\n    [74830.659500] PGD 0 P4D 0\\n    [74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI\\n    ...\\n    [74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011\\n    [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]\\n    ...\\n    [74830.689725] Call Trace:\\n    [74830.690402]  \u003cIRQ\u003e\\n    [74830.690953]  ? show_trace_log_lvl+0x1c4/0x2df\\n    [74830.692020]  ? show_trace_log_lvl+0x1c4/0x2df\\n    [74830.693095]  ? ipt_do_table+0x286/0x710 [ip_tables]\\n    [74830.694275]  ? __die_body.cold+0x8/0xd\\n    [74830.695205]  ? page_fault_oops+0xac/0x140\\n    [74830.696244]  ? exc_page_fault+0x62/0x150\\n    [74830.697225]  ? asm_exc_page_fault+0x22/0x30\\n    [74830.698344]  ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]\\n    [74830.699540]  ipt_do_table+0x286/0x710 [ip_tables]\\n    [74830.700758]  ? ip6_route_input+0x19d/0x240\\n    [74830.701752]  nf_hook_slow+0x3f/0xb0\\n    [74830.702678]  input_action_end_dx4+0x19b/0x1e0\\n    [74830.703735]  ? input_action_end_t+0xe0/0xe0\\n    [74830.704734]  seg6_local_input_core+0x2d/0x60\\n    [74830.705782]  lwtunnel_input+0x5b/0xb0\\n    [74830.706690]  __netif_receive_skb_one_core+0x63/0xa0\\n    [74830.707825]  process_backlog+0x99/0x140\\n    [74830.709538]  __napi_poll+0x2c/0x160\\n    [74830.710673]  net_rx_action+0x296/0x350\\n    [74830.711860]  __do_softirq+0xcb/0x2ac\\n    [74830.713049]  do_softirq+0x63/0x90\\n\\ninput_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally\\ntrigger a NULL dereference in rpfilter_mt()-\u003erpfilter_is_loopback():\\n\\n    static bool\\n    rpfilter_is_loopback(const struct sk_buff *skb,\\n          \\t       const struct net_device *in)\\n    {\\n            // in is NULL\\n            return skb-\u003epkt_type == PACKET_LOOPBACK ||\\n          \\t in-\u003eflags \u0026 IFF_LOOPBACK;\\n    }\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: seg6: corrige el paso de par\u00e1metros al llamar a NF_HOOK() en los comportamientos End.DX4 y End.DX6 input_action_end_dx4() y input_action_end_dx6() se llaman NF_HOOK() para el gancho PREROUTING, en el gancho PREROUTING , debemos pasar un indev v\u00e1lido y un outdev NULL a NF_HOOK(); de lo contrario, podemos desencadenar una desreferencia del puntero NULL, como se muestra a continuaci\u00f3n: [74830.647293] ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 00000000000000090 [74830.655633] #PF: acceso de lectura del supervisor en modo kernel [74830.657888] #PF: error_code(0x0000) - p\u00e1gina no presente [74830.659500] PGD 0 P4D 0 [74830.660450] Ups: 0000 [#1] PREEMPT SMP PTI... [74830.664953] Nombre de hardware: Red Hat KVM , BIOS 0.5.1 01/01/2011 [74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter] ... [74830.689725] Seguimiento de llamadas: [74830.690402]  [74830.690953] ? show_trace_log_lvl+0x1c4/0x2df [74830.692020] ? show_trace_log_lvl+0x1c4/0x2df [74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables] [74830.694275] ? __die_body.cold+0x8/0xd [74830.695205] ? page_fault_oops+0xac/0x140 [74830.696244] ? exc_page_fault+0x62/0x150 [74830.697225] ? asm_exc_page_fault+0x22/0x30 [74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter] [74830.699540] ipt_do_table+0x286/0x710 [ip_tables] [74830.700758] ? ip6_route_input+0x19d/0x240 [74830.701752] nf_hook_slow+0x3f/0xb0 [74830.702678] input_action_end_dx4+0x19b/0x1e0 [74830.703735] ? input_action_end_t+0xe0/0xe0 [74830.704734] seg6_local_input_core+0x2d/0x60 [74830.705782] lwtunnel_input+0x5b/0xb0 [74830.706690] __netif_receive_skb_one_core+0x63/0xa0 830.707825] proceso_atrasado+0x99/0x140 [74830.709538] __napi_poll+0x2c/0x160 [74830.710673] net_rx_action+ 0x296/0x350 [74830.711860] __do_softirq+0xcb/0x2ac [74830.713049] do_softirq+0x63/0x90 input_action_end_dx4() pasando un indev NULL a NF_HOOK(), y finalmente activa una desreferencia NULL en rpfilter_mt()-\u0026gt;rpfilter_is_lo opback(): bool est\u00e1tico rpfilter_is_loopback (const struct sk_buff *skb, const struct net_device *in) { // in es NULL return skb-\u0026gt;pkt_type == PACKET_LOOPBACK || en-\u0026gt;flags \u0026amp; IFF_LOOPBACK; }\"}],\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15\",\"versionEndExcluding\":\"5.15.162\",\"matchCriteriaId\":\"4626E4B7-D5F4-42CC-93A8-B73E6384273F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.96\",\"matchCriteriaId\":\"61E887B4-732A-40D2-9983-CC6F281EBFB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.36\",\"matchCriteriaId\":\"E1046C95-860A-45B0-B718-2B29F65BFF10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.7\",\"matchCriteriaId\":\"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"331C2F14-12C7-45D5-893D-8C52EE38EA10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3173713D-909A-4DD3-9DD4-1E171EB057EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"79F18AFA-40F7-43F0-BA30-7BDB65F918B9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/af90e3d73dc45778767b2fb6e7edd57ebe34380d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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