{"id":"CVE-2024-41006","revision":null,"records":[{"revision":"f64f9044b1654d7dbe8af7dfc06a5ac3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-41006","aliases":[],"title":"netrom: Fix a memory leak in nr_heartbeat_expiry()","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","state":0,"publishedAt":"2024-07-12T12:44:41.176+00:00","modifiedAt":"2026-10-15T00:47:14.987+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/netrom/nr_timer.c\"\n ],\n \"versions\": [\n {\n \"version\": \"a31caf5779ace8fa98b0d454133808e082ee7a1b\",\n \"lessThan\": \"d616876256b38ecf9a1a1c7d674192c5346bc69c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"fe9b9e621cebe6b7e83f7e954c70f8bb430520e5\",\n \"lessThan\": \"e07a9c2a850cdebf625e7a1b8171bd23a8554313\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7de16d75b20ab13b75a7291f449a1b00090edfea\",\n \"lessThan\": \"5391f9db2cab5ef1cb411be1ab7dbec728078fba\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"d2d3ab1b1de3302de2c85769121fd4f890e47ceb\",\n \"lessThan\": \"280cf1173726a7059b628c610c71050d5c0b6937\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"51e394c6f81adbfe7c34d15f58b3d4d44f144acf\",\n \"lessThan\": \"a02fd5d775cf9787ee7698c797e20f2fa13d2e2b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"409db27e3a2eb5e8ef7226ca33be33361b3ed1c9\",\n \"lessThan\": \"b6ebe4fed73eedeb73f4540f8edc4871945474c8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"409db27e3a2eb5e8ef7226ca33be33361b3ed1c9\",\n \"lessThan\": \"d377f5a28332954b19e373d36823e59830ab1712\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"409db27e3a2eb5e8ef7226ca33be33361b3ed1c9\",\n \"lessThan\": \"0b9130247f3b6a1122478471ff0e014ea96bb735\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e666990abb2e42dd4ba979b4706280a3664cfae7\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4.19.272\",\n \"lessThan\": \"4.19.317\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.231\",\n \"lessThan\": \"5.4.279\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.166\",\n \"lessThan\": \"5.10.221\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.91\",\n \"lessThan\": \"5.15.162\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.9\",\n \"lessThan\": \"6.1.96\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.305\",\n \"lessThan\": \"4.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/netrom/nr_timer.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.2\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.2\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.317\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.279\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.221\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.162\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.96\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.36\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9.7\",\n \"lessThanOrEqual\": \"6.9.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.10\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d616876256b38ecf9a1a1c7d674192c5346bc69c","https://git.kernel.org/stable/c/e07a9c2a850cdebf625e7a1b8171bd23a8554313","https://git.kernel.org/stable/c/5391f9db2cab5ef1cb411be1ab7dbec728078fba","https://git.kernel.org/stable/c/280cf1173726a7059b628c610c71050d5c0b6937","https://git.kernel.org/stable/c/a02fd5d775cf9787ee7698c797e20f2fa13d2e2b","https://git.kernel.org/stable/c/b6ebe4fed73eedeb73f4540f8edc4871945474c8","https://git.kernel.org/stable/c/d377f5a28332954b19e373d36823e59830ab1712","https://git.kernel.org/stable/c/0b9130247f3b6a1122478471ff0e014ea96bb735"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-41006","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-41006","identifiers":["CVE-2024-41006"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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