CVE-2023-53660

Kernel memory corruption via skb frame misclassification

Published Oct 7, 2025 · Updated Oct 7, 2025

Memory corruption in the Linux kernel allows local users with BPF and network-administration capabilities to corrupt kernel memory via cpumap teardown. __cpu_map_ring_cleanup() treats queued sk_buffs as XDP frames and passes their misread fields to XDP frame-release logic. The condition produces a kernel warning and can expose or corrupt memory or crash the host; triggering requires local BPF syscalls, CAP_NET_ADMIN, and skb-mode XDP traffic.

CVSS severity7.8
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the Linux kernel allows local users with BPF and network-administration capabilities to corrupt kernel memory via cpumap teardown. __cpu_map_ring_cleanup() treats queued sk_buffs as XDP frames and passes their misread fields to XDP frame-release logic. The condition produces a kernel warning and can expose or corrupt memory or crash the host; triggering requires local BPF syscalls, CAP_NET_ADMIN, and skb-mode XDP traffic.

The record

CVE
CVE-2023-53660
Published
Oct 7, 2025
Updated
Oct 7, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11941f8a85362f612df61f4aaab0e41b64d2111d <7c62b75cd1a792e14b037fa4f61f9b18914e7de1
  2. Affected versionversion=11941f8a85362f612df61f4aaab0e41b64d2111d <937345720d18f1ad006ba3d5dcb3fa121037b8a2
  3. Affected versionversion=11941f8a85362f612df61f4aaab0e41b64d2111d <b58d34068fd9f96bfc7d389988dfaf9a92a8fe00
  4. Affected versionversion=11941f8a85362f612df61f4aaab0e41b64d2111d <cbd000451885801e9bbfd9cf7a7946806a85cb5e
  5. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=11941f8a85362f612df61f4aaab0e41b64d2111d <7c62b75cd1a792e14b037fa4f61f9b18914e7de1; version=11941f8a85362f612df61f4aaab0e41b64d2111d <937345720d18f1ad006ba3d5dcb3fa121037b8a2; version=11941f8a85362f612df61f4aaab0e41b64d2111d <b58d34068fd9f96bfc7d389988dfaf9a92a8fe00; version=11941f8a85362f612df61f4aaab0e41b64d2111d <cbd000451885801e9bbfd9cf7a7946806a85cb5e; version=5.15

Published CVSS scores

5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux kernel CVE teamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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