CVE-2023-35827

Kernel crash via uncanceled ravb timeout work

Published Jun 18, 2023 · Updated Aug 2, 2024

Use-after-free in the Linux kernel through 6.3.8 allows local users to crash the system by racing Renesas ravb driver removal. The ravb_remove function frees its network device while queued timeout work can still dereference it because teardown does not synchronously cancel that work. Triggering the race requires local low-privileged access and the Renesas Ethernet AVB driver, and the bounded demonstrated consequence is a kernel crash.

CVSS severity7.0
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel through 6.3.8 allows local users to crash the system by racing Renesas ravb driver removal. The ravb_remove function frees its network device while queued timeout work can still dereference it because teardown does not synchronously cancel that work. Triggering the race requires local low-privileged access and the Renesas Ethernet AVB driver, and the bounded demonstrated consequence is a kernel crash.

The record

CVE
CVE-2023-35827
Published
Jun 18, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362, CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.0NIST NVDCVSS:3.1/AV:L/AC:H/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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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')
CWE-416Use After Free

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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