cbcvebase.
CVE-2023-53190
published 2025-09-15

CVE-2023-53190: In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix memory leaks in error path The memory allocated by vxlan_vnigroup_init() is not…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
5.8th percentile
In the Linux kernel, the following vulnerability has been resolved:

vxlan: Fix memory leaks in error path

The memory allocated by vxlan_vnigroup_init() is not freed in the error
path, leading to memory leaks [1]. Fix by calling
vxlan_vnigroup_uninit() in the error path.

The leaks can be reproduced by annotating gro_cells_init() with
ALLOW_ERROR_INJECTION() and then running:

# echo "100" > /sys/kernel/debug/fail_function/probability
# echo "1" > /sys/kernel/debug/fail_function/times
# echo "gro_cells_init" > /sys/kernel/debug/fail_function/inject
# printf %#x -12 > /sys/kernel/debug/fail_function/gro_cells_init/retval
# ip link add name vxlan0 type vxlan dstport 4789 external vnifilter
RTNETLINK answers: Cannot allocate memory

[1]
unreferenced object 0xffff88810db84a00 (size 512):
comm "ip", pid 330, jiffies 4295010045 (age 66.016s)
hex dump (first 32 bytes):
f8 d5 76 0e 81 88 ff ff 01 00 00 00 00 00 00 02 ..v.............
03 00 04 00 48 00 00 00 00 00 00 01 04 00 01 00 ....H...........
backtrace:
[] kmalloc_trace+0x2a/0x60
[] vxlan_vnigroup_init+0x4c/0x160
[] vxlan_init+0x1ae/0x280
[] register_netdevice+0x57a/0x16d0
[] __vxlan_dev_create+0x7c7/0xa50
[] vxlan_newlink+0xd6/0x130
[] __rtnl_newlink+0x112b/0x18a0
[] rtnl_newlink+0x6c/0xa0
[] rtnetlink_rcv_msg+0x43f/0xd40
[] netlink_rcv_skb+0x170/0x440
[] netlink_unicast+0x53f/0x810
[] netlink_sendmsg+0x958/0xe70
[] ____sys_sendmsg+0x78f/0xa90
[] ___sys_sendmsg+0x13a/0x1e0
[] __sys_sendmsg+0x11c/0x1f0
[] do_syscall_64+0x38/0x80
unreferenced object 0xffff88810e76d5f8 (size 192):
comm "ip", pid 330, jiffies 4295010045 (age 66.016s)
hex dump (first 32 bytes):
04 00 00 00 00 00 00 00 db e1 4f e7 00 00 00 00 ..........O.....
08 d6 76 0e 81 88 ff ff 08 d6 76 0e 81 88 ff ff ..v.......v.....
backtrace:
[] __kmalloc_node+0x4e/0x90
[] kvmalloc_node+0xa6/0x1f0
[] bucket_table_alloc.isra.0+0x83/0x460
[] rhashtable_init+0x43b/0x7c0
[] vxlan_vnigroup_init+0x6c/0x160
[] vxlan_init+0x1ae/0x280
[] register_netdevice+0x57a/0x16d0
[] _

Affected

11 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.7-1 (bookworm)linux 6.1.7-1 (bookworm)
linuxlinux——
linuxlinux>= f9c4bb0b245cee35ef66f75bf409c9573d934cf9 < 75c1ab900f7cf0485f0be1607c79c55f51faaa9075c1ab900f7cf0485f0be1607c79c55f51faaa90
linuxlinux>= f9c4bb0b245cee35ef66f75bf409c9573d934cf9 < 5896f55810680391a32652ca2b91245a05c11e225896f55810680391a32652ca2b91245a05c11e22
linuxlinux>= f9c4bb0b245cee35ef66f75bf409c9573d934cf9 < 06bf62944144a92d83dd14fd1378d2a28825956106bf62944144a92d83dd14fd1378d2a288259561
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 6.1.7-16.1.7-1
linuxlinux_kernel>= 0 < 6.1.7-16.1.7-1
linuxlinux_kernel>= 0 < 6.1.7-16.1.7-1
linuxlinux_kernel>= 5.18 < 6.0.196.0.19
linuxlinux_kernel>= 6.1 < 6.1.56.1.5

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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