{"id":"AZL-55846","summary":"CVE-2024-57841 affecting package kernel for versions less than 6.6.76.1-1","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":"2026-04-01T05:18:45.200917Z","published":"2025-01-15T13:15:12Z","upstream":["CVE-2024-57841"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-57841"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.76.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-55846.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"}]}