CVE-2024-53047
Vulnerability from cvelistv5
Published
2024-11-19 17:19
Modified
2025-05-04 09:51
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mptcp: init: protect sched with rcu_read_lock Enabling CONFIG_PROVE_RCU_LIST with its dependence CONFIG_RCU_EXPERT creates this splat when an MPTCP socket is created: ============================= WARNING: suspicious RCU usage 6.12.0-rc2+ #11 Not tainted ----------------------------- net/mptcp/sched.c:44 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 no locks held by mptcp_connect/176. stack backtrace: CPU: 0 UID: 0 PID: 176 Comm: mptcp_connect Not tainted 6.12.0-rc2+ #11 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace: <TASK> dump_stack_lvl (lib/dump_stack.c:123) lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) mptcp_sched_find (net/mptcp/sched.c:44 (discriminator 7)) mptcp_init_sock (net/mptcp/protocol.c:2867 (discriminator 1)) ? sock_init_data_uid (arch/x86/include/asm/atomic.h:28) inet_create.part.0.constprop.0 (net/ipv4/af_inet.c:386) ? __sock_create (include/linux/rcupdate.h:347 (discriminator 1)) __sock_create (net/socket.c:1576) __sys_socket (net/socket.c:1671) ? __pfx___sys_socket (net/socket.c:1712) ? do_user_addr_fault (arch/x86/mm/fault.c:1419 (discriminator 1)) __x64_sys_socket (net/socket.c:1728) do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1)) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) That's because when the socket is initialised, rcu_read_lock() is not used despite the explicit comment written above the declaration of mptcp_sched_find() in sched.c. Adding the missing lock/unlock avoids the warning.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3deb12c788c385e17142ce6ec50f769852fcec65Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/494eb22f9a7bd03783e60595a57611c209175f1aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cb8b81ad3e893a6d18dcdd3754cc2ea2a42c0136Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1730b2b2c5a5a886007b247366aebe0976dc8881
Version: 1730b2b2c5a5a886007b247366aebe0976dc8881
Version: 1730b2b2c5a5a886007b247366aebe0976dc8881
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   Linux Linux Version: 6.6
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mptcp/protocol.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: init: protect sched with rcu_read_lock\n\nEnabling CONFIG_PROVE_RCU_LIST with its dependence CONFIG_RCU_EXPERT\ncreates this splat when an MPTCP socket is created:\n\n  =============================\n  WARNING: suspicious RCU usage\n  6.12.0-rc2+ #11 Not tainted\n  -----------------------------\n  net/mptcp/sched.c:44 RCU-list traversed in non-reader section!!\n\n  other info that might help us debug this:\n\n  rcu_scheduler_active = 2, debug_locks = 1\n  no locks held by mptcp_connect/176.\n\n  stack backtrace:\n  CPU: 0 UID: 0 PID: 176 Comm: mptcp_connect Not tainted 6.12.0-rc2+ #11\n  Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl (lib/dump_stack.c:123)\n   lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822)\n   mptcp_sched_find (net/mptcp/sched.c:44 (discriminator 7))\n   mptcp_init_sock (net/mptcp/protocol.c:2867 (discriminator 1))\n   ? sock_init_data_uid (arch/x86/include/asm/atomic.h:28)\n   inet_create.part.0.constprop.0 (net/ipv4/af_inet.c:386)\n   ? __sock_create (include/linux/rcupdate.h:347 (discriminator 1))\n   __sock_create (net/socket.c:1576)\n   __sys_socket (net/socket.c:1671)\n   ? __pfx___sys_socket (net/socket.c:1712)\n   ? do_user_addr_fault (arch/x86/mm/fault.c:1419 (discriminator 1))\n   __x64_sys_socket (net/socket.c:1728)\n   do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1))\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nThat\u0027s because when the socket is initialised, rcu_read_lock() is not\nused despite the explicit comment written above the declaration of\nmptcp_sched_find() in sched.c. Adding the missing lock/unlock avoids the\nwarning."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:51:39.848Z",
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          "url": "https://git.kernel.org/stable/c/3deb12c788c385e17142ce6ec50f769852fcec65"
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      "title": "mptcp: init: protect sched with rcu_read_lock",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53047",
    "datePublished": "2024-11-19T17:19:34.036Z",
    "dateReserved": "2024-11-19T17:17:24.973Z",
    "dateUpdated": "2025-05-04T09:51:39.848Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53047\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-19T18:15:25.060\",\"lastModified\":\"2024-11-27T20:28:03.473\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: init: protect sched with rcu_read_lock\\n\\nEnabling CONFIG_PROVE_RCU_LIST with its dependence CONFIG_RCU_EXPERT\\ncreates this splat when an MPTCP socket is created:\\n\\n  =============================\\n  WARNING: suspicious RCU usage\\n  6.12.0-rc2+ #11 Not tainted\\n  -----------------------------\\n  net/mptcp/sched.c:44 RCU-list traversed in non-reader section!!\\n\\n  other info that might help us debug this:\\n\\n  rcu_scheduler_active = 2, debug_locks = 1\\n  no locks held by mptcp_connect/176.\\n\\n  stack backtrace:\\n  CPU: 0 UID: 0 PID: 176 Comm: mptcp_connect Not tainted 6.12.0-rc2+ #11\\n  Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011\\n  Call Trace:\\n   \u003cTASK\u003e\\n   dump_stack_lvl (lib/dump_stack.c:123)\\n   lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822)\\n   mptcp_sched_find (net/mptcp/sched.c:44 (discriminator 7))\\n   mptcp_init_sock (net/mptcp/protocol.c:2867 (discriminator 1))\\n   ? sock_init_data_uid (arch/x86/include/asm/atomic.h:28)\\n   inet_create.part.0.constprop.0 (net/ipv4/af_inet.c:386)\\n   ? __sock_create (include/linux/rcupdate.h:347 (discriminator 1))\\n   __sock_create (net/socket.c:1576)\\n   __sys_socket (net/socket.c:1671)\\n   ? __pfx___sys_socket (net/socket.c:1712)\\n   ? do_user_addr_fault (arch/x86/mm/fault.c:1419 (discriminator 1))\\n   __x64_sys_socket (net/socket.c:1728)\\n   do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1))\\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nThat\u0027s because when the socket is initialised, rcu_read_lock() is not\\nused despite the explicit comment written above the declaration of\\nmptcp_sched_find() in sched.c. Adding the missing lock/unlock avoids the\\nwarning.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: init: proteger sched con rcu_read_lock Habilitar CONFIG_PROVE_RCU_LIST con su dependencia CONFIG_RCU_EXPERT crea este splat cuando se crea un socket MPTCP: ============================= ADVERTENCIA: uso sospechoso de RCU 6.12.0-rc2+ #11 No contaminado ----------------------------- net/mptcp/sched.c:44 \u00a1Lista de RCU recorrida en una secci\u00f3n que no es de lectura! Otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: rcu_scheduler_active = 2, debug_locks = 1 no hay bloqueos retenidos por mptcp_connect/176. seguimiento de pila: CPU: 0 UID: 0 PID: 176 Comm: mptcp_connect No contaminado 6.12.0-rc2+ #11 Nombre del hardware: Bochs Bochs, BIOS Bochs 01/01/2011 Seguimiento de llamadas:  dump_stack_lvl (lib/dump_stack.c:123) lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) mptcp_sched_find (net/mptcp/sched.c:44 (discriminador 7)) mptcp_init_sock (net/mptcp/protocol.c:2867 (discriminador 1)) ? __sock_create (include/linux/rcupdate.h:347 (discriminador 1)) __sock_create (net/socket.c:1576) __sys_socket (net/socket.c:1671) ? __pfx___sys_socket (net/socket.c:1712) ? do_user_addr_fault (arch/x86/mm/fault.c:1419 (discriminator 1)) __x64_sys_socket (net/socket.c:1728) do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1)) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Esto se debe a que cuando se inicializa el socket, no se utiliza rcu_read_lock() a pesar del comentario expl\u00edcito escrito encima de la declaraci\u00f3n de mptcp_sched_find() en sched.c. Agregar el bloqueo/desbloqueo faltante evita la advertencia.\"}],\"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-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6\",\"versionEndExcluding\":\"6.6.60\",\"matchCriteriaId\":\"D65DC921-1258-459B-AC56-13B03E48CA9C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.11.7\",\"matchCriteriaId\":\"E96F53A4-5E87-4A70-BD9A-BC327828D57F\"},{\"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\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3deb12c788c385e17142ce6ec50f769852fcec65\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/494eb22f9a7bd03783e60595a57611c209175f1a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb8b81ad3e893a6d18dcdd3754cc2ea2a42c0136\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}