CVE-2023-53228

Kernel crash via duplicate scheduler job cleanup

Published Sep 15, 2025 · Updated May 23, 2026

NULL pointer dereference in Linux 6.1.160 through 6.1.166 and 6.2 through 6.3.2 allows local users to crash the kernel via AMD GPU submissions. When userptr invalidation aborts amdgpu_cs_submit, its legacy abort path cleans up a scheduler job already released by amdgpu_job_free, causing a double free and NULL pointer dereference. Exploitation requires low-privileged local access to the AMD GPU command-submission path; the reported consequence is availability loss only.

CVSS severity5.5
Medium
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

NULL pointer dereference in Linux 6.1.160 through 6.1.166 and 6.2 through 6.3.2 allows local users to crash the kernel via AMD GPU submissions. When userptr invalidation aborts amdgpu_cs_submit, its legacy abort path cleans up a scheduler job already released by amdgpu_job_free, causing a double free and NULL pointer dereference. Exploitation requires low-privileged local access to the AMD GPU command-submission path; the reported consequence is availability loss only.

The record

CVE
CVE-2023-53228
Published
Sep 15, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=49aa99f05dbc75b9ae360a74648c420a80f7ee49 <cdce1644d85e858c68fb5fa67d78eb1035bf34f4
  2. Affected versionversion=6.1.160 <6.1.167
  3. Affected versionversion=6.2
  4. Affected versionversion=f7d66fb2ea43a3016e78a700a2ca6c77a74579f9 <1253685f0d3eb3eab0bfc4bf15ab341a5f3da0c8
  5. Affected versionversion=f7d66fb2ea43a3016e78a700a2ca6c77a74579f9 <c1564d4b105ae535eb3183ecaaa987685b20a888
  6. Affected versionversion=f7d66fb2ea43a3016e78a700a2ca6c77a74579f9 <ec02a29c3c2ef8ad3e15a0e3f96b99a00e5d97b4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=49aa99f05dbc75b9ae360a74648c420a80f7ee49 <cdce1644d85e858c68fb5fa67d78eb1035bf34f4; version=6.1.160 <6.1.167; version=6.2; version=f7d66fb2ea43a3016e78a700a2ca6c77a74579f9 <1253685f0d3eb3eab0bfc4bf15ab341a5f3da0c8; version=f7d66fb2ea43a3016e78a700a2ca6c77a74579f9 <c1564d4b105ae535eb3183ecaaa987685b20a888; version=f7d66fb2ea43a3016e78a700a2ca6c77a74579f9 <ec02a29c3c2ef8ad3e15a0e3f96b99a00e5d97b4

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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

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

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-476NULL Pointer Dereference
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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