{"id":"CVE-2024-57841","state":"PUBLISHED","title":"net: fix memory leak in tcp_conn_request()","description":"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->route_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    [<ffffffffb93e8d4c>] kmem_cache_alloc+0x60c/0xa80\n    [<ffffffffba11b4c5>] dst_alloc+0x55/0x250\n    [<ffffffffba227bf6>] rt_dst_alloc+0x46/0x1d0\n    [<ffffffffba23050a>] __mkroute_output+0x29a/0xa50\n    [<ffffffffba23456b>] ip_route_output_key_hash+0x10b/0x240\n    [<ffffffffba2346bd>] ip_route_output_flow+0x1d/0x90\n    [<ffffffffba254855>] inet_csk_route_req+0x2c5/0x500\n    [<ffffffffba26b331>] tcp_conn_request+0x691/0x12c0\n    [<ffffffffba27bd08>] tcp_rcv_state_process+0x3c8/0x11b0\n    [<ffffffffba2965c6>] tcp_v4_do_rcv+0x156/0x3b0\n    [<ffffffffba299c98>] tcp_v4_rcv+0x1cf8/0x1d80\n    [<ffffffffba239656>] ip_protocol_deliver_rcu+0xf6/0x360\n    [<ffffffffba2399a6>] ip_local_deliver_finish+0xe6/0x1e0\n    [<ffffffffba239b8e>] ip_local_deliver+0xee/0x360\n    [<ffffffffba239ead>] ip_rcv+0xad/0x2f0\n    [<ffffffffba110943>] __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().","publishedAt":"2025-01-15T13:10:26.842Z","updatedAt":"2026-05-23T15:56:09.585Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"527bec1f56ac7a2fceb8eb77eb0fc2678ecba394","status":"affected","lessThan":"9d38959677291552d1b0ed2689a540af279b5bf8","versionType":"git"},{"version":"c14f3c3793f7a785763e353df7fc40426187f832","status":"affected","lessThan":"de3f999bf8aee16e9da1c1224191abdc69e97c9d","versionType":"git"},{"version":"fdae4d139f4778b20a40c60705c53f5f146459b5","status":"affected","lessThan":"2af69905180b3fea12f9c1db374b153a06977021","versionType":"git"},{"version":"ff46e3b4421923937b7f6e44ffcd3549a074f321","status":"affected","lessThan":"b0b190218c78d8aeecfba36ea3a90063b3ede52d","versionType":"git"},{"version":"ff46e3b4421923937b7f6e44ffcd3549a074f321","status":"affected","lessThan":"4f4aa4aa28142d53f8b06585c478476cfe325cfc","versionType":"git"},{"version":"360892e60710427229fc1f7bb2218cf4d578229b","status":"affected","versionType":"git"},{"version":"5.15.162","status":"affected","lessThan":"5.15.176","versionType":"semver"},{"version":"6.1.97","status":"affected","lessThan":"6.1.124","versionType":"semver"},{"version":"6.6.37","status":"affected","lessThan":"6.6.70","versionType":"semver"},{"version":"6.9.8","status":"affected","lessThan":"6.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_input.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"5.15.176","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.124","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.70","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.9","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_input.c"]}],"references":["https://git.kernel.org/stable/c/9d38959677291552d1b0ed2689a540af279b5bf8","https://git.kernel.org/stable/c/de3f999bf8aee16e9da1c1224191abdc69e97c9d","https://git.kernel.org/stable/c/2af69905180b3fea12f9c1db374b153a06977021","https://git.kernel.org/stable/c/b0b190218c78d8aeecfba36ea3a90063b3ede52d","https://git.kernel.org/stable/c/4f4aa4aa28142d53f8b06585c478476cfe325cfc","https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:08:12.933Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/57xxx/CVE-2024-57841.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-57841","state":"PUBLISHED","datePublished":"2025-01-15T13:10:26.842Z","dateUpdated":"2026-05-23T15:56:09.585Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-01-15T13:08:59.716Z"},"containers":{"cna":{"title":"net: fix memory leak in tcp_conn_request()","descriptions":[{"lang":"en","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->route_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    [<ffffffffb93e8d4c>] kmem_cache_alloc+0x60c/0xa80\n    [<ffffffffba11b4c5>] dst_alloc+0x55/0x250\n    [<ffffffffba227bf6>] rt_dst_alloc+0x46/0x1d0\n    [<ffffffffba23050a>] __mkroute_output+0x29a/0xa50\n    [<ffffffffba23456b>] ip_route_output_key_hash+0x10b/0x240\n    [<ffffffffba2346bd>] ip_route_output_flow+0x1d/0x90\n    [<ffffffffba254855>] inet_csk_route_req+0x2c5/0x500\n    [<ffffffffba26b331>] tcp_conn_request+0x691/0x12c0\n    [<ffffffffba27bd08>] tcp_rcv_state_process+0x3c8/0x11b0\n    [<ffffffffba2965c6>] tcp_v4_do_rcv+0x156/0x3b0\n    [<ffffffffba299c98>] tcp_v4_rcv+0x1cf8/0x1d80\n    [<ffffffffba239656>] ip_protocol_deliver_rcu+0xf6/0x360\n    [<ffffffffba2399a6>] ip_local_deliver_finish+0xe6/0x1e0\n    [<ffffffffba239b8e>] ip_local_deliver+0xee/0x360\n    [<ffffffffba239ead>] ip_rcv+0xad/0x2f0\n    [<ffffffffba110943>] __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()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"527bec1f56ac7a2fceb8eb77eb0fc2678ecba394","status":"affected","lessThan":"9d38959677291552d1b0ed2689a540af279b5bf8","versionType":"git"},{"version":"c14f3c3793f7a785763e353df7fc40426187f832","status":"affected","lessThan":"de3f999bf8aee16e9da1c1224191abdc69e97c9d","versionType":"git"},{"version":"fdae4d139f4778b20a40c60705c53f5f146459b5","status":"affected","lessThan":"2af69905180b3fea12f9c1db374b153a06977021","versionType":"git"},{"version":"ff46e3b4421923937b7f6e44ffcd3549a074f321","status":"affected","lessThan":"b0b190218c78d8aeecfba36ea3a90063b3ede52d","versionType":"git"},{"version":"ff46e3b4421923937b7f6e44ffcd3549a074f321","status":"affected","lessThan":"4f4aa4aa28142d53f8b06585c478476cfe325cfc","versionType":"git"},{"version":"360892e60710427229fc1f7bb2218cf4d578229b","status":"affected","versionType":"git"},{"version":"5.15.162","status":"affected","lessThan":"5.15.176","versionType":"semver"},{"version":"6.1.97","status":"affected","lessThan":"6.1.124","versionType":"semver"},{"version":"6.6.37","status":"affected","lessThan":"6.6.70","versionType":"semver"},{"version":"6.9.8","status":"affected","lessThan":"6.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_input.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.10","versionType":"semver"},{"version":"5.15.176","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.124","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.70","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.9","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_input.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9d38959677291552d1b0ed2689a540af279b5bf8"},{"url":"https://git.kernel.org/stable/c/de3f999bf8aee16e9da1c1224191abdc69e97c9d"},{"url":"https://git.kernel.org/stable/c/2af69905180b3fea12f9c1db374b153a06977021"},{"url":"https://git.kernel.org/stable/c/b0b190218c78d8aeecfba36ea3a90063b3ede52d"},{"url":"https://git.kernel.org/stable/c/4f4aa4aa28142d53f8b06585c478476cfe325cfc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:56:09.585Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.162","versionEndExcluding":"5.15.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.97","versionEndExcluding":"6.1.124"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.37","versionEndExcluding":"6.6.70"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.12.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2024-57841","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:54:23.329434Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:57:18.572Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T20:54:41.406Z"}}]}}}