GHSA-2XXJ-GWFX-RR2C
Vulnerability from github – Published: 2024-05-17 15:31 – Updated: 2025-01-07 21:30In the Linux kernel, the following vulnerability has been resolved:
calipso: fix memory leak in netlbl_calipso_add_pass()
If IPv6 support is disabled at boot (ipv6.disable=1), the calipso_init() -> netlbl_calipso_ops_register() function isn't called, and the netlbl_calipso_ops_get() function always returns NULL. In this case, the netlbl_calipso_add_pass() function allocates memory for the doi_def variable but doesn't free it with the calipso_doi_free().
BUG: memory leak unreferenced object 0xffff888011d68180 (size 64): comm "syz-executor.1", pid 10746, jiffies 4295410986 (age 17.928s) hex dump (first 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 ................ backtrace: [<...>] kmalloc include/linux/slab.h:552 [inline] [<...>] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [inline] [<...>] 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 [inline] [<...>] 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 [inline] [<...>] 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 [inline] [<...>] sock_sendmsg+0x157/0x190 net/socket.c:671 [<...>] _syssendmsg+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
Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller
[PM: merged via the LSM tree at Jakub Kicinski request]
{
"affected": [],
"aliases": [
"CVE-2023-52698"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-17T15:15:20Z",
"severity": "MODERATE"
},
"details": "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() -\u003e netlbl_calipso_ops_register() function isn\u0027t 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\u0027t 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 [\u003c...\u003e] kmalloc include/linux/slab.h:552 [inline]\n [\u003c...\u003e] netlbl_calipso_add_pass net/netlabel/netlabel_calipso.c:76 [inline]\n [\u003c...\u003e] netlbl_calipso_add+0x22e/0x4f0 net/netlabel/netlabel_calipso.c:111\n [\u003c...\u003e] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739\n [\u003c...\u003e] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]\n [\u003c...\u003e] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800\n [\u003c...\u003e] netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2515\n [\u003c...\u003e] genl_rcv+0x29/0x40 net/netlink/genetlink.c:811\n [\u003c...\u003e] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\n [\u003c...\u003e] netlink_unicast+0x54b/0x800 net/netlink/af_netlink.c:1339\n [\u003c...\u003e] netlink_sendmsg+0x90a/0xdf0 net/netlink/af_netlink.c:1934\n [\u003c...\u003e] sock_sendmsg_nosec net/socket.c:651 [inline]\n [\u003c...\u003e] sock_sendmsg+0x157/0x190 net/socket.c:671\n [\u003c...\u003e] ____sys_sendmsg+0x712/0x870 net/socket.c:2342\n [\u003c...\u003e] ___sys_sendmsg+0xf8/0x170 net/socket.c:2396\n [\u003c...\u003e] __sys_sendmsg+0xea/0x1b0 net/socket.c:2429\n [\u003c...\u003e] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46\n [\u003c...\u003e] 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]",
"id": "GHSA-2xxj-gwfx-rr2c",
"modified": "2025-01-07T21:30:54Z",
"published": "2024-05-17T15:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52698"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/321b3a5592c8a9d6b654c7c64833ea67dbb33149"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/36e19f84634aaa94f543fedc0a07588949638d53"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/408bbd1e1746fe33e51f4c81c2febd7d3841d031"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/44a88650ba55e6a7f2ec485d2c2413ba7e216f01"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9a8f811a146aa2a0230f8edb2e9f4b6609aab8da"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a4529a08d3704c17ea9c7277d180e46b99250ded"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ec4e9d630a64df500641892f4e259e8149594a99"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f14d36e6e97fe935a20e0ceb159c100f90b6627c"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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