CVE-2023-52698

CVE Details

Release Date:

2024-05-17

Description

In the Linux kernel, the following vulnerability has been resolved:\ncalipso: fix memory leak in netlbl_calipso_add_pass()\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().\nBUG: memory leak\nunreferenced object 0xffff888011d68180 (size 64):\ncomm 'syz-executor.1', pid 10746, jiffies 4295410986 (age 17.928s)\nhex dump (first 32 bytes):\n00 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\nbacktrace:\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\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with Syzkaller\n[PM: merged via the LSM tree at Jakub Kicinski request]

See more information about CVE-2023-52698 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	5.5	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	Low	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14