{"id":"CVE-2024-57841","summary":"net: fix memory leak in tcp_conn_request()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix memory leak in tcp_conn_request()\n\nIf inet_csk_reqsk_queue_hash_add() return false, tcp_conn_request() will\nreturn without free the dst memory, which allocated in af_ops-\u003eroute_req.\n\nHere is the kmemleak stack:\n\nunreferenced object 0xffff8881198631c0 (size 240):\n  comm \"softirq\", pid 0, jiffies 4299266571 (age 1802.392s)\n  hex dump (first 32 bytes):\n    00 10 9b 03 81 88 ff ff 80 98 da bc ff ff ff ff  ................\n    81 55 18 bb ff ff ff ff 00 00 00 00 00 00 00 00  .U..............\n  backtrace:\n    [\u003cffffffffb93e8d4c\u003e] kmem_cache_alloc+0x60c/0xa80\n    [\u003cffffffffba11b4c5\u003e] dst_alloc+0x55/0x250\n    [\u003cffffffffba227bf6\u003e] rt_dst_alloc+0x46/0x1d0\n    [\u003cffffffffba23050a\u003e] __mkroute_output+0x29a/0xa50\n    [\u003cffffffffba23456b\u003e] ip_route_output_key_hash+0x10b/0x240\n    [\u003cffffffffba2346bd\u003e] ip_route_output_flow+0x1d/0x90\n    [\u003cffffffffba254855\u003e] inet_csk_route_req+0x2c5/0x500\n    [\u003cffffffffba26b331\u003e] tcp_conn_request+0x691/0x12c0\n    [\u003cffffffffba27bd08\u003e] tcp_rcv_state_process+0x3c8/0x11b0\n    [\u003cffffffffba2965c6\u003e] tcp_v4_do_rcv+0x156/0x3b0\n    [\u003cffffffffba299c98\u003e] tcp_v4_rcv+0x1cf8/0x1d80\n    [\u003cffffffffba239656\u003e] ip_protocol_deliver_rcu+0xf6/0x360\n    [\u003cffffffffba2399a6\u003e] ip_local_deliver_finish+0xe6/0x1e0\n    [\u003cffffffffba239b8e\u003e] ip_local_deliver+0xee/0x360\n    [\u003cffffffffba239ead\u003e] ip_rcv+0xad/0x2f0\n    [\u003cffffffffba110943\u003e] __netif_receive_skb_one_core+0x123/0x140\n\nCall dst_release() to free the dst memory when\ninet_csk_reqsk_queue_hash_add() return false in tcp_conn_request().","modified":"2026-04-16T04:37:29.131496946Z","published":"2025-01-15T13:10:26.842Z","related":["USN-7379-2","USN-7380-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57841.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2af69905180b3fea12f9c1db374b153a06977021"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f4aa4aa28142d53f8b06585c478476cfe325cfc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9d38959677291552d1b0ed2689a540af279b5bf8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0b190218c78d8aeecfba36ea3a90063b3ede52d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de3f999bf8aee16e9da1c1224191abdc69e97c9d"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57841.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-57841"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"527bec1f56ac7a2fceb8eb77eb0fc2678ecba394"},{"fixed":"9d38959677291552d1b0ed2689a540af279b5bf8"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c14f3c3793f7a785763e353df7fc40426187f832"},{"fixed":"de3f999bf8aee16e9da1c1224191abdc69e97c9d"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fdae4d139f4778b20a40c60705c53f5f146459b5"},{"fixed":"2af69905180b3fea12f9c1db374b153a06977021"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ff46e3b4421923937b7f6e44ffcd3549a074f321"},{"fixed":"b0b190218c78d8aeecfba36ea3a90063b3ede52d"},{"fixed":"4f4aa4aa28142d53f8b06585c478476cfe325cfc"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"360892e60710427229fc1f7bb2218cf4d578229b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57841.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}