CVE-2023-53007

Early-crash trace loss via late event registration

Published Mar 27, 2025 · Updated May 11, 2026

Denial of service in Linux kernel tracing allows local users to make early-crash trace_printk output unusable during an oops. The trace_printk event type remains unregistered until early_initcall even though trace_printk becomes usable during early_trace_init, so the dump reports Unknown type 6. The condition requires ftrace_dump_on_oops and a crash before early_initcall; it loses diagnostic trace output rather than causing the initiating crash.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux kernel tracing allows local users to make early-crash trace_printk output unusable during an oops. The trace_printk event type remains unregistered until early_initcall even though trace_printk becomes usable during early_trace_init, so the dump reports Unknown type 6. The condition requires ftrace_dump_on_oops and a crash before early_initcall; it loses diagnostic trace output rather than causing the initiating crash.

The record

CVE
CVE-2023-53007
Published
Mar 27, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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=4.12
  2. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <198c83963f6335ca6d690cff067679560f2a3a22
  3. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253
  4. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce
  5. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <b0af180514edea6c83dc9a299d9f383009c99f25
  6. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <b94d7c7654356860dd7719120c7d15ba38b6162a
  7. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <de3930a4883ddad2244efd6d349013294c62c75c
  8. Affected versionversion=e725c731e3bb1e892e7b564c945b121cb41d1087 <f97eb0ab066133483a65c93eb894748de2f6b598

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <198c83963f6335ca6d690cff067679560f2a3a22; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <b0af180514edea6c83dc9a299d9f383009c99f25; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <b94d7c7654356860dd7719120c7d15ba38b6162a; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <de3930a4883ddad2244efd6d349013294c62c75c; version=e725c731e3bb1e892e7b564c945b121cb41d1087 <f97eb0ab066133483a65c93eb894748de2f6b598

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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