cve-2024-50304
Vulnerability from cvelistv5
Published
2024-11-19 17:19
Modified
2025-02-02 10:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_find() The per-netns IP tunnel hash table is protected by the RTNL mutex and ip_tunnel_find() is only called from the control path where the mutex is taken. Add a lockdep expression to hlist_for_each_entry_rcu() in ip_tunnel_find() in order to validate that the mutex is held and to silence the suspicious RCU usage warning [1]. [1] WARNING: suspicious RCU usage 6.12.0-rc3-custom-gd95d9a31aceb #139 Not tainted ----------------------------- net/ipv4/ip_tunnel.c:221 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by ip/362: #0: ffffffff86fc7cb0 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x377/0xf60 stack backtrace: CPU: 12 UID: 0 PID: 362 Comm: ip Not tainted 6.12.0-rc3-custom-gd95d9a31aceb #139 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace: <TASK> dump_stack_lvl+0xba/0x110 lockdep_rcu_suspicious.cold+0x4f/0xd6 ip_tunnel_find+0x435/0x4d0 ip_tunnel_newlink+0x517/0x7a0 ipgre_newlink+0x14c/0x170 __rtnl_newlink+0x1173/0x19c0 rtnl_newlink+0x6c/0xa0 rtnetlink_rcv_msg+0x3cc/0xf60 netlink_rcv_skb+0x171/0x450 netlink_unicast+0x539/0x7f0 netlink_sendmsg+0x8c1/0xd80 ____sys_sendmsg+0x8f9/0xc20 ___sys_sendmsg+0x197/0x1e0 __sys_sendmsg+0x122/0x1f0 do_syscall_64+0xbb/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31bd7378c6fe100a8af0e996ea0b5dafd3579df6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ac5dfa575136da8dd8a9e7c1437c41f3a593993
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90e0569dd3d32f4f4d2ca691d3fa5a8a14a13c12Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce11424026cbf87d5861b09e5e33565ff7f2ec8d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0500e4373cd3d5eace1f1712444ab830b82c114
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f20fe2cfe06ca1b008b09da4f2b4e0c5547ccef6Patch
Impacted products
Vendor Product Version
Linux Linux Version: c54419321455631079c7d6e60bc732dd0c5914c5
Version: c54419321455631079c7d6e60bc732dd0c5914c5
Version: c54419321455631079c7d6e60bc732dd0c5914c5
Version: c54419321455631079c7d6e60bc732dd0c5914c5
Version: c54419321455631079c7d6e60bc732dd0c5914c5
Version: c54419321455631079c7d6e60bc732dd0c5914c5
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{
   containers: {
      cna: {
         affected: [
            {
               defaultStatus: "unaffected",
               product: "Linux",
               programFiles: [
                  "net/ipv4/ip_tunnel.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     lessThan: "31bd7378c6fe100a8af0e996ea0b5dafd3579df6",
                     status: "affected",
                     version: "c54419321455631079c7d6e60bc732dd0c5914c5",
                     versionType: "git",
                  },
                  {
                     lessThan: "6ac5dfa575136da8dd8a9e7c1437c41f3a593993",
                     status: "affected",
                     version: "c54419321455631079c7d6e60bc732dd0c5914c5",
                     versionType: "git",
                  },
                  {
                     lessThan: "ce11424026cbf87d5861b09e5e33565ff7f2ec8d",
                     status: "affected",
                     version: "c54419321455631079c7d6e60bc732dd0c5914c5",
                     versionType: "git",
                  },
                  {
                     lessThan: "e0500e4373cd3d5eace1f1712444ab830b82c114",
                     status: "affected",
                     version: "c54419321455631079c7d6e60bc732dd0c5914c5",
                     versionType: "git",
                  },
                  {
                     lessThan: "f20fe2cfe06ca1b008b09da4f2b4e0c5547ccef6",
                     status: "affected",
                     version: "c54419321455631079c7d6e60bc732dd0c5914c5",
                     versionType: "git",
                  },
                  {
                     lessThan: "90e0569dd3d32f4f4d2ca691d3fa5a8a14a13c12",
                     status: "affected",
                     version: "c54419321455631079c7d6e60bc732dd0c5914c5",
                     versionType: "git",
                  },
               ],
            },
            {
               defaultStatus: "affected",
               product: "Linux",
               programFiles: [
                  "net/ipv4/ip_tunnel.c",
               ],
               repo: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               vendor: "Linux",
               versions: [
                  {
                     status: "affected",
                     version: "3.10",
                  },
                  {
                     lessThan: "3.10",
                     status: "unaffected",
                     version: "0",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "5.10.*",
                     status: "unaffected",
                     version: "5.10.234",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "5.15.*",
                     status: "unaffected",
                     version: "5.15.178",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "6.1.*",
                     status: "unaffected",
                     version: "6.1.128",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "6.6.*",
                     status: "unaffected",
                     version: "6.6.75",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "6.11.*",
                     status: "unaffected",
                     version: "6.11.7",
                     versionType: "semver",
                  },
                  {
                     lessThanOrEqual: "*",
                     status: "unaffected",
                     version: "6.12",
                     versionType: "original_commit_for_fix",
                  },
               ],
            },
         ],
         descriptions: [
            {
               lang: "en",
               value: "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_find()\n\nThe per-netns IP tunnel hash table is protected by the RTNL mutex and\nip_tunnel_find() is only called from the control path where the mutex is\ntaken.\n\nAdd a lockdep expression to hlist_for_each_entry_rcu() in\nip_tunnel_find() in order to validate that the mutex is held and to\nsilence the suspicious RCU usage warning [1].\n\n[1]\nWARNING: suspicious RCU usage\n6.12.0-rc3-custom-gd95d9a31aceb #139 Not tainted\n-----------------------------\nnet/ipv4/ip_tunnel.c:221 RCU-list traversed in non-reader section!!\n\nother info that might help us debug this:\n\nrcu_scheduler_active = 2, debug_locks = 1\n1 lock held by ip/362:\n #0: ffffffff86fc7cb0 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x377/0xf60\n\nstack backtrace:\nCPU: 12 UID: 0 PID: 362 Comm: ip Not tainted 6.12.0-rc3-custom-gd95d9a31aceb #139\nHardware name: Bochs Bochs, BIOS Bochs 01/01/2011\nCall Trace:\n <TASK>\n dump_stack_lvl+0xba/0x110\n lockdep_rcu_suspicious.cold+0x4f/0xd6\n ip_tunnel_find+0x435/0x4d0\n ip_tunnel_newlink+0x517/0x7a0\n ipgre_newlink+0x14c/0x170\n __rtnl_newlink+0x1173/0x19c0\n rtnl_newlink+0x6c/0xa0\n rtnetlink_rcv_msg+0x3cc/0xf60\n netlink_rcv_skb+0x171/0x450\n netlink_unicast+0x539/0x7f0\n netlink_sendmsg+0x8c1/0xd80\n ____sys_sendmsg+0x8f9/0xc20\n ___sys_sendmsg+0x197/0x1e0\n __sys_sendmsg+0x122/0x1f0\n do_syscall_64+0xbb/0x1d0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f",
            },
         ],
         providerMetadata: {
            dateUpdated: "2025-02-02T10:15:05.537Z",
            orgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            shortName: "Linux",
         },
         references: [
            {
               url: "https://git.kernel.org/stable/c/31bd7378c6fe100a8af0e996ea0b5dafd3579df6",
            },
            {
               url: "https://git.kernel.org/stable/c/6ac5dfa575136da8dd8a9e7c1437c41f3a593993",
            },
            {
               url: "https://git.kernel.org/stable/c/ce11424026cbf87d5861b09e5e33565ff7f2ec8d",
            },
            {
               url: "https://git.kernel.org/stable/c/e0500e4373cd3d5eace1f1712444ab830b82c114",
            },
            {
               url: "https://git.kernel.org/stable/c/f20fe2cfe06ca1b008b09da4f2b4e0c5547ccef6",
            },
            {
               url: "https://git.kernel.org/stable/c/90e0569dd3d32f4f4d2ca691d3fa5a8a14a13c12",
            },
         ],
         title: "ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_find()",
         x_generator: {
            engine: "bippy-5f407fcff5a0",
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      assignerShortName: "Linux",
      cveId: "CVE-2024-50304",
      datePublished: "2024-11-19T17:19:30.242Z",
      dateReserved: "2024-10-21T19:36:19.987Z",
      dateUpdated: "2025-02-02T10:15:05.537Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2024-50304\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-19T18:15:22.343\",\"lastModified\":\"2025-02-02T11:15:11.207\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_find()\\n\\nThe per-netns IP tunnel hash table is protected by the RTNL mutex and\\nip_tunnel_find() is only called from the control path where the mutex is\\ntaken.\\n\\nAdd a lockdep expression to hlist_for_each_entry_rcu() in\\nip_tunnel_find() in order to validate that the mutex is held and to\\nsilence the suspicious RCU usage warning [1].\\n\\n[1]\\nWARNING: suspicious RCU usage\\n6.12.0-rc3-custom-gd95d9a31aceb #139 Not tainted\\n-----------------------------\\nnet/ipv4/ip_tunnel.c:221 RCU-list traversed in non-reader section!!\\n\\nother info that might help us debug this:\\n\\nrcu_scheduler_active = 2, debug_locks = 1\\n1 lock held by ip/362:\\n #0: ffffffff86fc7cb0 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x377/0xf60\\n\\nstack backtrace:\\nCPU: 12 UID: 0 PID: 362 Comm: ip Not tainted 6.12.0-rc3-custom-gd95d9a31aceb #139\\nHardware name: Bochs Bochs, BIOS Bochs 01/01/2011\\nCall Trace:\\n <TASK>\\n dump_stack_lvl+0xba/0x110\\n lockdep_rcu_suspicious.cold+0x4f/0xd6\\n ip_tunnel_find+0x435/0x4d0\\n ip_tunnel_newlink+0x517/0x7a0\\n ipgre_newlink+0x14c/0x170\\n __rtnl_newlink+0x1173/0x19c0\\n rtnl_newlink+0x6c/0xa0\\n rtnetlink_rcv_msg+0x3cc/0xf60\\n netlink_rcv_skb+0x171/0x450\\n netlink_unicast+0x539/0x7f0\\n netlink_sendmsg+0x8c1/0xd80\\n ____sys_sendmsg+0x8f9/0xc20\\n ___sys_sendmsg+0x197/0x1e0\\n __sys_sendmsg+0x122/0x1f0\\n do_syscall_64+0xbb/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv4: ip_tunnel: Se corrige la advertencia de uso sospechoso de RCU en ip_tunnel_find() La tabla hash del túnel IP por netns está protegida por el mutex RTNL y ip_tunnel_find() solo se llama desde la ruta de control donde se toma el mutex. Agregue una expresión lockdep a hlist_for_each_entry_rcu() en ip_tunnel_find() para validar que se mantiene el mutex y silenciar la advertencia de uso sospechoso de RCU [1]. [1] ADVERTENCIA: uso sospechoso de RCU 6.12.0-rc3-custom-gd95d9a31aceb #139 No contaminado ----------------------------- net/ipv4/ip_tunnel.c:221 ¡Lista de RCU recorrida en la sección que no es de lectura! Otra información que podría ayudarnos a depurar esto: rcu_scheduler_active = 2, debug_locks = 1 1 bloqueo retenido por ip/362: #0: ffffffff86fc7cb0 (rtnl_mutex){+.+.}-{3:3}, en: rtnetlink_rcv_msg+0x377/0xf60 seguimiento de pila: CPU: 12 UID: 0 PID: 362 Comm: ip No contaminado 6.12.0-rc3-custom-gd95d9a31aceb #139 Nombre del hardware: Bochs Bochs, BIOS Bochs 01/01/2011 Seguimiento de llamadas:  dump_stack_lvl+0xba/0x110 lockdep_rcu_suspicious.cold+0x4f/0xd6 ip_tunnel_find+0x435/0x4d0 ip_tunnel_newlink+0x517/0x7a0 ipgre_newlink+0x14c/0x170 __rtnl_newlink+0x1173/0x19c0 rtnl_newlink+0x6c/0xa0 rtnetlink_rcv_msg+0x3cc/0xf60 netlink_rcv_skb+0x171/0x450 netlink_unicast+0x539/0x7f0 netlink_sendmsg+0x8c1/0xd80 ____sys_sendmsg+0x8f9/0xc20 ___sys_sendmsg+0x197/0x1e0 __sys_sendmsg+0x122/0x1f0 hacer_syscall_64+0xbb/0x1d0 entrada_SYSCALL_64_después_hwframe+0x77/0x7f\"}],\"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\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10.12\",\"versionEndExcluding\":\"6.11.7\",\"matchCriteriaId\":\"71D5AD44-225A-4EFC-B47D-2C5EFE16D98B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"24B88717-53F5-42AA-9B72-14C707639E3F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/31bd7378c6fe100a8af0e996ea0b5dafd3579df6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6ac5dfa575136da8dd8a9e7c1437c41f3a593993\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/90e0569dd3d32f4f4d2ca691d3fa5a8a14a13c12\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ce11424026cbf87d5861b09e5e33565ff7f2ec8d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e0500e4373cd3d5eace1f1712444ab830b82c114\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f20fe2cfe06ca1b008b09da4f2b4e0c5547ccef6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
   },
}


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