CVE-2023-52563

Local denial of service via unreleased EDID buffers

Published Mar 2, 2024 · Updated May 23, 2026

Memory leak in the Meson DRM HDMI encoder in affected Linux kernels allows local users to exhaust kernel memory through repeated HPD events. The meson_encoder_hdmi_hpd_notify callback obtains an EDID buffer with drm_bridge_get_edid but passes it to the CEC notifier without freeing the allocation after a connected-state notification. Reachability requires the Meson DRM HDMI path, an active CEC notifier, and repeated connected hot-plug notifications; accumulated allocations can interrupt system availability.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Meson DRM HDMI encoder in affected Linux kernels allows local users to exhaust kernel memory through repeated HPD events. The meson_encoder_hdmi_hpd_notify callback obtains an EDID buffer with drm_bridge_get_edid but passes it to the CEC notifier without freeing the allocation after a connected-state notification. Reachability requires the Meson DRM HDMI path, an active CEC notifier, and repeated connected hot-plug notifications; accumulated allocations can interrupt system availability.

The record

CVE
CVE-2023-52563
Published
Mar 2, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE 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=0af5e0b41110e2da872030395231ab19c45be931 <099f0af9d98231bb74956ce92508e87cbcb896be
  2. Affected versionversion=0af5e0b41110e2da872030395231ab19c45be931 <43b63e088887a8b82750e16762f77100ffa76cba
  3. Affected versionversion=0af5e0b41110e2da872030395231ab19c45be931 <ee335e0094add7fc2c7034e0534e1920d61d2078
  4. Affected versionversion=5.15.61 <5.15.134
  5. Affected versionversion=5.17
  6. Affected versionversion=e098989a9219f4456047f9b0e8c44f03e29a843e <66cb6d74f5a1b6eafe3370b56bf2cb575a91acbc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0af5e0b41110e2da872030395231ab19c45be931 <099f0af9d98231bb74956ce92508e87cbcb896be; version=0af5e0b41110e2da872030395231ab19c45be931 <43b63e088887a8b82750e16762f77100ffa76cba; version=0af5e0b41110e2da872030395231ab19c45be931 <ee335e0094add7fc2c7034e0534e1920d61d2078; version=5.15.61 <5.15.134; version=5.17; version=e098989a9219f4456047f9b0e8c44f03e29a843e <66cb6d74f5a1b6eafe3370b56bf2cb575a91acbc

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

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-401Missing Release of Memory after Effective Lifetime
T1499.001OS Exhaustion Flood

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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