CVE-2024-57841 (GCVE-0-2024-57841)
Vulnerability from cvelistv5
Published
2025-01-15 13:10
Modified
2026-05-23 15:56
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: fix memory leak in tcp_conn_request() If inet_csk_reqsk_queue_hash_add() return false, tcp_conn_request() will return without free the dst memory, which allocated in af_ops->route_req. Here is the kmemleak stack: unreferenced object 0xffff8881198631c0 (size 240): comm "softirq", pid 0, jiffies 4299266571 (age 1802.392s) hex dump (first 32 bytes): 00 10 9b 03 81 88 ff ff 80 98 da bc ff ff ff ff ................ 81 55 18 bb ff ff ff ff 00 00 00 00 00 00 00 00 .U.............. backtrace: [<ffffffffb93e8d4c>] kmem_cache_alloc+0x60c/0xa80 [<ffffffffba11b4c5>] dst_alloc+0x55/0x250 [<ffffffffba227bf6>] rt_dst_alloc+0x46/0x1d0 [<ffffffffba23050a>] __mkroute_output+0x29a/0xa50 [<ffffffffba23456b>] ip_route_output_key_hash+0x10b/0x240 [<ffffffffba2346bd>] ip_route_output_flow+0x1d/0x90 [<ffffffffba254855>] inet_csk_route_req+0x2c5/0x500 [<ffffffffba26b331>] tcp_conn_request+0x691/0x12c0 [<ffffffffba27bd08>] tcp_rcv_state_process+0x3c8/0x11b0 [<ffffffffba2965c6>] tcp_v4_do_rcv+0x156/0x3b0 [<ffffffffba299c98>] tcp_v4_rcv+0x1cf8/0x1d80 [<ffffffffba239656>] ip_protocol_deliver_rcu+0xf6/0x360 [<ffffffffba2399a6>] ip_local_deliver_finish+0xe6/0x1e0 [<ffffffffba239b8e>] ip_local_deliver+0xee/0x360 [<ffffffffba239ead>] ip_rcv+0xad/0x2f0 [<ffffffffba110943>] __netif_receive_skb_one_core+0x123/0x140 Call dst_release() to free the dst memory when inet_csk_reqsk_queue_hash_add() return false in tcp_conn_request().
References
Impacted products
Vendor Product Version
Linux Linux Version: 527bec1f56ac7a2fceb8eb77eb0fc2678ecba394
Version: c14f3c3793f7a785763e353df7fc40426187f832
Version: fdae4d139f4778b20a40c60705c53f5f146459b5
Version: ff46e3b4421923937b7f6e44ffcd3549a074f321
Version: ff46e3b4421923937b7f6e44ffcd3549a074f321
Version: 360892e60710427229fc1f7bb2218cf4d578229b
Version: 5.15.162   ≤
Version: 6.1.97   ≤
Version: 6.6.37   ≤
Version: 6.9.8   ≤
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          "value": "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()."
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