{"id":"CVE-2024-41006","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-41006","generatedAt":"2026-10-28T02:13:12.459Z","title":"In the Linux kernel, the following vulnerability has been resolved: netrom: Fix a memory leak in nr_heartbeat_expiry() syzbot reported a memory leak in nr_create() [0].","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetrom: Fix a memory leak in nr_heartbeat_expiry()\n\nsyzbot reported a memory leak in nr_create() [0].\n\nCommit 409db27e3a2e (\"netrom: Fix use-after-free of a listening socket.\")\nadded sock_hold() to the nr_heartbeat_expiry() function, where\na) a socket has a SOCK_DESTROY flag or\nb) a listening socket has a SOCK_DEAD flag.\n\nBut in the case \"a,\" when the SOCK_DESTROY flag is set, the file descriptor\nhas already been closed and the nr_release() function has been called.\nSo it makes no sense to hold the reference count because no one will\ncall another nr_destroy_socket() and put it as in the case \"b.\"\n\nnr_connect\n  nr_establish_data_link\n    nr_start_heartbeat\n\nnr_release\n  switch (nr->state)\n  case NR_STATE_3\n    nr->state = NR_STATE_2\n    sock_set_flag(sk, SOCK_DESTROY);\n\n                        nr_rx_frame\n                          nr_process_rx_frame\n                            switch (nr->state)\n                            case NR_STATE_2\n                              nr_state2_machine()\n                                nr_disconnect()\n                                  nr_sk(sk)->state = NR_STATE_0\n                                  sock_set_flag(sk, SOCK_DEAD)\n\n                        nr_heartbeat_expiry\n                          switch (nr->state)\n                          case NR_STATE_0\n                            if (sock_flag(sk, SOCK_DESTROY) ||\n                               (sk->sk_state == TCP_LISTEN\n                                 && sock_flag(sk, SOCK_DEAD)))\n                               sock_hold()  // ( !!! )\n                               nr_destroy_socket()\n\nTo fix the memory leak, let's call sock_hold() only for a listening socket.\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with Syzkaller.\n\n[0]: https://syzkaller.appspot.com/bug?extid=d327a1f3b12e1e206c16","published":"2024-07-12T13:15:21.000Z","lastModified":"2026-10-15T01:18:41.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-401"],"affected":["linux/linux kernel"],"epss":{"score":0.00242,"percentile":0.15282,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/0b9130247f3b6a1122478471ff0e014ea96bb735","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/280cf1173726a7059b628c610c71050d5c0b6937","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5391f9db2cab5ef1cb411be1ab7dbec728078fba","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a02fd5d775cf9787ee7698c797e20f2fa13d2e2b","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b6ebe4fed73eedeb73f4540f8edc4871945474c8","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d377f5a28332954b19e373d36823e59830ab1712","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d616876256b38ecf9a1a1c7d674192c5346bc69c","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e07a9c2a850cdebf625e7a1b8171bd23a8554313","tags":["Mailing List","Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0b9130247f3b6a1122478471ff0e014ea96bb735","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/280cf1173726a7059b628c610c71050d5c0b6937","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5391f9db2cab5ef1cb411be1ab7dbec728078fba","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/a02fd5d775cf9787ee7698c797e20f2fa13d2e2b","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/b6ebe4fed73eedeb73f4540f8edc4871945474c8","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d377f5a28332954b19e373d36823e59830ab1712","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d616876256b38ecf9a1a1c7d674192c5346bc69c","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e07a9c2a850cdebf625e7a1b8171bd23a8554313","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-355557.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-613116.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-41006","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}