{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T14:32:23.595","vulnerabilities":[{"cve":{"id":"CVE-2024-50304","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-11-19T18:15:22.343","lastModified":"2025-11-03T21:17:19.177","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"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}