CVE-2023-53003

Local kernel compromise via freed EDAC data

Published Mar 27, 2025 · Updated May 11, 2026

Use-after-free in the QCOM EDAC driver in affected Linux kernels allows local users to compromise the system after the driver is reprobed. The driver gives the EDAC core an LLCC-owned llcc_driv_data pointer as private data, causing EDAC release logic to free memory still referenced as platform data. Exploitation requires local low-privileged access and a Qualcomm LLCC/EDAC configuration; successful use can expose or alter kernel data or crash the system.

CVSS severity7.8
High
EPSS probability0.26%
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 QCOM EDAC driver in affected Linux kernels allows local users to compromise the system after the driver is reprobed. The driver gives the EDAC core an LLCC-owned llcc_driv_data pointer as private data, causing EDAC release logic to free memory still referenced as platform data. Exploitation requires local low-privileged access and a Qualcomm LLCC/EDAC configuration; successful use can expose or alter kernel data or crash the system.

The record

CVE
CVE-2023-53003
Published
Mar 27, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
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=27450653f1db0b9d5b5048a246c850c52ee4aa61 <66e10d5f399629ef7877304d9ba2b35d0474e7eb
  2. Affected versionversion=27450653f1db0b9d5b5048a246c850c52ee4aa61 <6f0351d0c311951b8b3064db91e61841e85b2b96
  3. Affected versionversion=27450653f1db0b9d5b5048a246c850c52ee4aa61 <76d9ebb7f0bc10fbc78b6d576751552edf743968
  4. Affected versionversion=27450653f1db0b9d5b5048a246c850c52ee4aa61 <977c6ba624f24ae20cf0faee871257a39348d4a9
  5. Affected versionversion=27450653f1db0b9d5b5048a246c850c52ee4aa61 <bff5243bd32661cf9ce66f6d9210fc8f89bda145
  6. Affected versionversion=4.20

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=27450653f1db0b9d5b5048a246c850c52ee4aa61 <66e10d5f399629ef7877304d9ba2b35d0474e7eb; version=27450653f1db0b9d5b5048a246c850c52ee4aa61 <6f0351d0c311951b8b3064db91e61841e85b2b96; version=27450653f1db0b9d5b5048a246c850c52ee4aa61 <76d9ebb7f0bc10fbc78b6d576751552edf743968; version=27450653f1db0b9d5b5048a246c850c52ee4aa61 <977c6ba624f24ae20cf0faee871257a39348d4a9; version=27450653f1db0b9d5b5048a246c850c52ee4aa61 <bff5243bd32661cf9ce66f6d9210fc8f89bda145; version=4.20

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8CISA-ADPCVSS: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

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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