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]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < 6.5.0-41.41 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 23.10 | noarch | linux-aws | < 6.5.0-1021.21 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/ec4e9d630a64df500641892f4e259e8149594a99 (6.8-rc1)
git.kernel.org/stable/c/321b3a5592c8a9d6b654c7c64833ea67dbb33149
git.kernel.org/stable/c/36e19f84634aaa94f543fedc0a07588949638d53
git.kernel.org/stable/c/408bbd1e1746fe33e51f4c81c2febd7d3841d031
git.kernel.org/stable/c/44a88650ba55e6a7f2ec485d2c2413ba7e216f01
git.kernel.org/stable/c/9a8f811a146aa2a0230f8edb2e9f4b6609aab8da
git.kernel.org/stable/c/a4529a08d3704c17ea9c7277d180e46b99250ded
git.kernel.org/stable/c/ec4e9d630a64df500641892f4e259e8149594a99
git.kernel.org/stable/c/f14d36e6e97fe935a20e0ceb159c100f90b6627c
launchpad.net/bugs/cve/CVE-2023-52698
nvd.nist.gov/vuln/detail/CVE-2023-52698
security-tracker.debian.org/tracker/CVE-2023-52698
ubuntu.com/security/notices/USN-6818-1
ubuntu.com/security/notices/USN-6818-2
ubuntu.com/security/notices/USN-6818-3
ubuntu.com/security/notices/USN-6818-4
ubuntu.com/security/notices/USN-6819-1
ubuntu.com/security/notices/USN-6819-2
ubuntu.com/security/notices/USN-6819-3
ubuntu.com/security/notices/USN-6819-4
www.cve.org/CVERecord?id=CVE-2023-52698