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CVE-2023-52698

calipso: fix memory leak in netlbl_calipso_add_pass() PUBLISHED

Description (CNA)

In 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 [<...>] ____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 Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with Syzkaller [PM: merged via the LSM tree at Jakub Kicinski request]

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected cb72d38211eacda2dd90b09540542b6582da614e before 9a8f811a146aa2a0230f8edb2e9f4b6609aab8da; affected cb72d38211eacda2dd90b09540542b6582da614e before 36e19f84634aaa94f543fedc0a07588949638d53; affected cb72d38211eacda2dd90b09540542b6582da614e before 44a88650ba55e6a7f2ec485d2c2413ba7e216f01; affected cb72d38211eacda2dd90b09540542b6582da614e before a4529a08d3704c17ea9c7277d180e46b99250ded; affected cb72d38211eacda2dd90b09540542b6582da614e before 321b3a5592c8a9d6b654c7c64833ea67dbb33149; affected cb72d38211eacda2dd90b09540542b6582da614e before 408bbd1e1746fe33e51f4c81c2febd7d3841d031; affected cb72d38211eacda2dd90b09540542b6582da614e before f14d36e6e97fe935a20e0ceb159c100f90b6627c; affected cb72d38211eacda2dd90b09540542b6582da614e before ec4e9d630a64df500641892f4e259e8149594a99
Linux / Linuxaffected 4.8; unaffected 0 before 4.8; unaffected 4.19.306 through 4.19.*; unaffected 5.4.268 through 5.4.*; unaffected 5.10.209 through 5.10.*; unaffected 5.15.148 through 5.15.*; unaffected 6.1.75 through 6.1.*; unaffected 6.6.14 through 6.6.*; unaffected 6.7.2 through 6.7.*; unaffected 6.8 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.