2025-01-07 21:03:46 +00:00

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{
"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() -&gt; 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: [&lt;...&gt;] kmalloc include/linux/slab.h:552 [en l\u00ednea] [&lt;...&gt;] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [en l\u00ednea] [&lt;... &gt;] netlbl_calipso_add+0x22e/0x4f0 net/netlabel/netlabel_calipso.c:111 [&lt;...&gt;] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739 [&lt;...&gt;] genl_family_rcv_msg net/netlink/genetlink .c:783 [en l\u00ednea] [&lt;...&gt;] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800 [&lt;...&gt;] netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2515 [ &lt;...&gt;] genl_rcv+0x29/0x40 net/netlink/genetlink.c:811 [&lt;...&gt;] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [en l\u00ednea] [&lt;...&gt;] netlink_unicast+0x54b /0x800 net/netlink/af_netlink.c:1339 [&lt;...&gt;] netlink_sendmsg+0x90a/0xdf0 net/netlink/af_netlink.c:1934 [&lt;...&gt;] sock_sendmsg_nosec net/socket.c:651 [en l\u00ednea] [&lt;...&gt;] sock_sendmsg+0x157/0x190 net/socket.c:671 [&lt;...&gt;] ____sys_sendmsg+0x712/0x870 net/socket.c:2342 [&lt;...&gt;] ___sys_sendmsg+0xf8/0x170 net/socket.c:2396 [&lt;...&gt;] __sys_sendmsg+0xea/0x1b0 net/socket.c:2429 [&lt;...&gt;] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 [ &lt;...&gt;] 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"
}
]
}
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