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CVE-2023-53190— vxlan: Fix memory leaks in error path

Quick assessment

Affected

Linux Linux

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于错误路径中未释放vxlan_vnigroup_init分配的内存，可能导致内存泄漏。

AI Predicted 3.7 Difficulty: Moderate EPSS 0.18% · P7 Updated May 13, 2026

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 8

Vendor	Product	Version Range	Status
Linux	Linux	`f9c4bb0b245cee35ef66f75bf409c9573d934cf9< 75c1ab900f7cf0485f0be1607c79c55f51faaa90`	affected
		`f9c4bb0b245cee35ef66f75bf409c9573d934cf9< 5896f55810680391a32652ca2b91245a05c11e22`	affected
		`f9c4bb0b245cee35ef66f75bf409c9573d934cf9< 06bf62944144a92d83dd14fd1378d2a288259561`	affected
		`5.18`	affected
		`< 5.18`	unaffected
		`6.0.19≤ 6.0.*`	unaffected
		`6.1.5≤ 6.1.*`	unaffected
		`6.2≤ *`	unaffected

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I. Basic Information for CVE-2023-53190

Vulnerability Information

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Vulnerability Title

vxlan: Fix memory leaks in error path

Source: CVE Program / CVE List V5

Vulnerability Description

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: [<ffffffff81a3097a>] kmalloc_trace+0x2a/0x60 [<ffffffff82f049fc>] vxlan_vnigroup_init+0x4c/0x160 [<ffffffff82ecd69e>] vxlan_init+0x1ae/0x280 [<ffffffff836858ca>] register_netdevice+0x57a/0x16d0 [<ffffffff82ef67b7>] __vxlan_dev_create+0x7c7/0xa50 [<ffffffff82ef6ce6>] vxlan_newlink+0xd6/0x130 [<ffffffff836d02ab>] __rtnl_newlink+0x112b/0x18a0 [<ffffffff836d0a8c>] rtnl_newlink+0x6c/0xa0 [<ffffffff836c0ddf>] rtnetlink_rcv_msg+0x43f/0xd40 [<ffffffff83908ce0>] netlink_rcv_skb+0x170/0x440 [<ffffffff839066af>] netlink_unicast+0x53f/0x810 [<ffffffff839072d8>] netlink_sendmsg+0x958/0xe70 [<ffffffff835c319f>] ____sys_sendmsg+0x78f/0xa90 [<ffffffff835cd6da>] ___sys_sendmsg+0x13a/0x1e0 [<ffffffff835cd94c>] __sys_sendmsg+0x11c/0x1f0 [<ffffffff8424da78>] 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: [<ffffffff81a3162e>] __kmalloc_node+0x4e/0x90 [<ffffffff81a0e166>] kvmalloc_node+0xa6/0x1f0 [<ffffffff8276e1a3>] bucket_table_alloc.isra.0+0x83/0x460 [<ffffffff8276f18b>] rhashtable_init+0x43b/0x7c0 [<ffffffff82f04a1c>] vxlan_vnigroup_init+0x6c/0x160 [<ffffffff82ecd69e>] vxlan_init+0x1ae/0x280 [<ffffffff836858ca>] register_netdevice+0x57a/0x16d0 [<ffffffff82ef67b7>] __vxlan_dev_create+0x7c7/0xa50 [<ffffffff82ef6ce6>] vxlan_newlink+0xd6/0x130 [<ffffffff836d02ab>] __rtnl_newlink+0x112b/0x18a0 [<ffffffff836d0a8c>] rtnl_newlink+0x6c/0xa0 [<ffffffff836c0ddf>] rtnetlink_rcv_msg+0x43f/0xd40 [<ffffffff83908ce0>] netlink_rcv_skb+0x170/0x440 [<ffffffff839066af>] netlink_unicast+0x53f/0x810 [<ffffffff839072d8>] netlink_sendmsg+0x958/0xe70 [<ffffffff835c319f>] ____sys_sendmsg+0x78f/0xa90

Source: CVE Program / CVE List V5

CVSS Information

N/A

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Vulnerability Title

Linux kernel 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	f9c4bb0b245cee35ef66f75bf409c9573d934cf9 ~ 75c1ab900f7cf0485f0be1607c79c55f51faaa90	-
Linux	Linux	5.18	-

II. Public POCs for CVE-2023-53190

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

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III. Intelligence Information for CVE-2023-53190

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https://www.cve.org/CVERecord?id=CVE-2023-53190

Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235	9.8 CRITICAL	NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335	9.8 CRITICAL	9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192	9.8 CRITICAL	vxlan: Fix nexthop hash size
CVE-2023-53253	8.8 HIGH	HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226	8.8 HIGH	wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241	8.8 HIGH	NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194	8.4 HIGH	fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213	8.1 HIGH	wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186	8.1 HIGH	skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50310	7.8 HIGH	ip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed
CVE-2023-53254	7.8 HIGH	cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53252	7.8 HIGH	Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53170	7.8 HIGH	net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53176	7.8 HIGH	serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178	7.8 HIGH	mm: fix zswap writeback race condition
CVE-2023-53179	7.8 HIGH	netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184	7.8 HIGH	arm64/sme: Set new vector length before reallocating
CVE-2022-50315	7.8 HIGH	ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53187	7.8 HIGH	btrfs: fix use-after-free of new block group that became unused
CVE-2025-39800	7.8 HIGH	btrfs: abort transaction on unexpected eb generation at btrfs_copy_root()

Showing top 20 of 210 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2023-53190— vxlan: Fix memory leaks in error path

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 8

I. Basic Information for CVE-2023-53190

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2023-53190

III. Intelligence Information for CVE-2023-53190

Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2023-53190

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