What is CVE-2023-54200?

CVE-2023-54200 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.14.15 onward and patched in 5.15.113, 6.1.30, 6.3.4 and others. CVE-2023-54200 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54200?

CVE-2023-54200 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-54200?

Yes, CVE-2023-54200 has been patched. Fixed versions include 5.15.113, 6.1.30, 6.3.4 and others. If you are running Linux kernel 5.14.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54200 actively exploited?

CVE-2023-54200 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54200

High

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: always release netdev hooks from notifier This reverts "netfilter: nf_tables: skip netdev events generated on netns removal". The problem is that when a veth device is released, the veth release callback will also queue the peer netns device for removal. Its possible that the peer netns is also slated for removal. In this case, the device memory is already released before the pre_exit hook of the peer netns runs: BUG: KASAN: slab-use-after-free in nf_hook_entry_head+0x1b8/0x1d0 Read of size 8 at addr ffff88812c0124f0 by task kworker/u8:1/45 Workqueue: netns cleanup_net Call Trace: nf_hook_entry_head+0x1b8/0x1d0 __nf_unregister_net_hook+0x76/0x510 nft_netdev_unregister_hooks+0xa0/0x220 __nft_release_hook+0x184/0x490 nf_tables_pre_exit_net+0x12f/0x1b0 .. Order is: 1. First netns is released, veth_dellink() queues peer netns device for removal 2. peer netns is queued for removal 3. peer netns device is released, unreg event is triggered 4. unreg event is ignored because netns is going down 5. pre_exit hook calls nft_netdev_unregister_hooks but device memory might be free'd already.

Package Linux Kernel

Published 2025-12-30

Last modified 2026-08-04

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 5.14.15, 5.15 and later are affected. Fixed in 5.15.113, 6.1.30, 6.3.4, 6.4 and their respective stable series.

Affected from

≥ 5.14.15 ≥ 5.15

Fixed in

✓ 5.15.113 5.15.x ✓ 6.1.30 6.1.x ✓ 6.3.4 6.3.x ✓ 6.4

References

4 total

Details

CVE ID CVE-2023-54200

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-12-30

Modified 2026-08-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-54200?

CVE-2023-54200 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.14.15 onward and has been patched in 5.15.113, 6.1.30, 6.3.4 and others. CVE-2023-54200 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-54200?

CVE-2023-54200 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-54200?

Yes. CVE-2023-54200 has been patched. Fixed versions include 5.15.113, 6.1.30, 6.3.4 and others. If you are running Linux kernel 5.14.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54200 actively exploited?

No. CVE-2023-54200 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.