CVE-2023-53368

Local kernel panic via tracing buffer race

Published Sep 17, 2025 · Updated Sep 17, 2025

Race condition in the Linux kernel tracing subsystem allows local users to trigger a kernel warning through concurrent per-CPU snapshots. The ring_buffer_swap_cpu path replaces buffer->buffers[cpu] while an event writer retains the old cpu_buffer, so rb_commit checks the wrong committing state. Low-privileged local access to the tracing snapshot interface and a successful race are required; the warning becomes a system panic when panic_on_warn is enabled.

CVSS severity4.7
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel tracing subsystem allows local users to trigger a kernel warning through concurrent per-CPU snapshots. The ring_buffer_swap_cpu path replaces buffer->buffers[cpu] while an event writer retains the old cpu_buffer, so rb_commit checks the wrong committing state. Low-privileged local access to the tracing snapshot interface and a successful race are required; the warning becomes a system panic when panic_on_warn is enabled.

The record

CVE
CVE-2023-53368
Published
Sep 17, 2025
Updated
Sep 17, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=3.10
  2. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <3163f635b20e9e1fb4659e74f47918c9dddfe64e
  3. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <37ca1b686078b00cc4ffa008e2190615f7709b5d
  4. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <6182318ac04648b46db9d441fd7d696337fcdd0b
  5. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <74c85396bd73eca80b96510b4edf93b9a3aff75f
  6. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <89c89da92a60028013f9539be0dcce7e44405a43
  7. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <90e037cabc2c2dfc39b3dd9c5b22ea91f995539a
  8. Affected versionversion=f1affcaaa861f27752a769f889bf1486ebd301fe <c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=f1affcaaa861f27752a769f889bf1486ebd301fe <3163f635b20e9e1fb4659e74f47918c9dddfe64e; version=f1affcaaa861f27752a769f889bf1486ebd301fe <37ca1b686078b00cc4ffa008e2190615f7709b5d; version=f1affcaaa861f27752a769f889bf1486ebd301fe <6182318ac04648b46db9d441fd7d696337fcdd0b; version=f1affcaaa861f27752a769f889bf1486ebd301fe <74c85396bd73eca80b96510b4edf93b9a3aff75f; version=f1affcaaa861f27752a769f889bf1486ebd301fe <89c89da92a60028013f9539be0dcce7e44405a43; version=f1affcaaa861f27752a769f889bf1486ebd301fe <90e037cabc2c2dfc39b3dd9c5b22ea91f995539a; version=f1affcaaa861f27752a769f889bf1486ebd301fe <c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db

Published CVSS scores

4.7CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7UbuntuCVSS:3.1/AV:L/AC:H/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

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

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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