{ "id": "CVE-2023-52698", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2024-05-17T15:15:20.693", "lastModified": "2025-01-07T20:18:13.340", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncalipso: fix memory leak in netlbl_calipso_add_pass()\n\nIf IPv6 support is disabled at boot (ipv6.disable=1),\nthe calipso_init() -> netlbl_calipso_ops_register() function isn't called,\nand the netlbl_calipso_ops_get() function always returns NULL.\nIn this case, the netlbl_calipso_add_pass() function allocates memory\nfor the doi_def variable but doesn't free it with the calipso_doi_free().\n\nBUG: memory leak\nunreferenced object 0xffff888011d68180 (size 64):\n comm \"syz-executor.1\", pid 10746, jiffies 4295410986 (age 17.928s)\n hex dump (first 32 bytes):\n 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [<...>] kmalloc include/linux/slab.h:552 [inline]\n [<...>] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [inline]\n [<...>] netlbl_calipso_add+0x22e/0x4f0 net/netlabel/netlabel_calipso.c:111\n [<...>] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739\n [<...>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]\n [<...>] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800\n [<...>] netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2515\n [<...>] genl_rcv+0x29/0x40 net/netlink/genetlink.c:811\n [<...>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\n [<...>] netlink_unicast+0x54b/0x800 net/netlink/af_netlink.c:1339\n [<...>] netlink_sendmsg+0x90a/0xdf0 net/netlink/af_netlink.c:1934\n [<...>] sock_sendmsg_nosec net/socket.c:651 [inline]\n [<...>] sock_sendmsg+0x157/0x190 net/socket.c:671\n [<...>] ____sys_sendmsg+0x712/0x870 net/socket.c:2342\n [<...>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2396\n [<...>] __sys_sendmsg+0xea/0x1b0 net/socket.c:2429\n [<...>] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46\n [<...>] entry_SYSCALL_64_after_hwframe+0x61/0xc6\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with Syzkaller\n\n[PM: merged via the LSM tree at Jakub Kicinski request]" }, { "lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: calipso: corrige la p\u00e9rdida de memoria en netlbl_calipso_add_pass() Si la compatibilidad con IPv6 est\u00e1 deshabilitada en el arranque (ipv6.disable=1), no se llama a la funci\u00f3n calipso_init() -> netlbl_calipso_ops_register() y la funci\u00f3n netlbl_calipso_ops_get() siempre devuelve NULL. En este caso, la funci\u00f3n netlbl_calipso_add_pass() asigna memoria para la variable doi_def pero no la libera con calipso_doi_free(). ERROR: p\u00e9rdida de memoria, objeto sin referencia 0xffff888011d68180 (tama\u00f1o 64): comunicaci\u00f3n \"syz-executor.1\", pid 10746, jiffies 4295410986 (edad 17,928 s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................. ... seguimiento: [<...>] kmalloc include/linux/slab.h:552 [en l\u00ednea] [<...>] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [en l\u00ednea] [<... >] netlbl_calipso_add+0x22e/0x4f0 net/netlabel/netlabel_calipso.c:111 [<...>] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739 [<...>] genl_family_rcv_msg net/netlink/genetlink .c:783 [en l\u00ednea] [<...>] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800 [<...>] netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2515 [ <...>] genl_rcv+0x29/0x40 net/netlink/genetlink.c:811 [<...>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [en l\u00ednea] [<...>] netlink_unicast+0x54b /0x800 net/netlink/af_netlink.c:1339 [<...>] netlink_sendmsg+0x90a/0xdf0 net/netlink/af_netlink.c:1934 [<...>] sock_sendmsg_nosec net/socket.c:651 [en l\u00ednea] [<...>] sock_sendmsg+0x157/0x190 net/socket.c:671 [<...>] ____sys_sendmsg+0x712/0x870 net/socket.c:2342 [<...>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2396 [<...>] __sys_sendmsg+0xea/0x1b0 net/socket.c:2429 [<...>] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 [ <...>] Entry_SYSCALL_64_after_hwframe+0x61/0xc6 Encontrado por InfoTeCS en nombre del Centro de verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller [PM: fusionado a trav\u00e9s del \u00e1rbol LSM a petici\u00f3n de Jakub Kicinski]" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 3.6 } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-401" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.19.306", "matchCriteriaId": "7FC6512A-615E-49FC-AD4A-975938736D0D" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.4.268", "matchCriteriaId": "991BF737-6083-429B-ACD5-FB27D4143E2F" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.209", "matchCriteriaId": "74979A03-4B10-4815-AE3E-C8C0D2FDAA39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.148", "matchCriteriaId": "2ED0CDB9-61B0-408E-B2A8-5199107F7868" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.75", "matchCriteriaId": "070D0ED3-90D0-4F95-B1FF-57D7F46F332D" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.14", "matchCriteriaId": "5C6B50A6-3D8B-4CE2-BDCC-A098609CBA14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.7.2", "matchCriteriaId": "7229C448-E0C9-488B-8939-36BA5254065E" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/321b3a5592c8a9d6b654c7c64833ea67dbb33149", "source": 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