# CVE-2023-53190: linux: In the Linux kernel, the following vulnerability has been resolved:  vxlan: Fix memory leaks in error path  The memor...

CVE-2023-53190 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53190, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53190
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 15, 2025

## 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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.7-1 | [DEBIAN-CVE-2023-53190](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53190.md) | Sep 15, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.7-1 | [DEBIAN-CVE-2023-53190](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53190.md) | Sep 15, 2025 |
| Linux | linux Debian 14 | 6.1.7-1 | [DEBIAN-CVE-2023-53190](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53190.md) | Sep 15, 2025 |

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