CVE-2026-53378

System availability loss via unreleased colorop blob references

Published Jul 19, 2026 · Updated Jul 19, 2026

Memory leaks in Linux Kernel 6.19 through 7.0.8 allow local users to exhaust memory through DRM colorop state operations. The drm_colorop_atomic_destroy_state() and drm_colorop_reset() paths free state without releasing blob references, so repeated lifecycle operations retain allocations. Exploitation requires low-privileged local access and use of the affected DRM colorop path; the resulting memory exhaustion can interrupt system availability.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leaks in Linux Kernel 6.19 through 7.0.8 allow local users to exhaust memory through DRM colorop state operations. The drm_colorop_atomic_destroy_state() and drm_colorop_reset() paths free state without releasing blob references, so repeated lifecycle operations retain allocations. Exploitation requires low-privileged local access and use of the affected DRM colorop path; the resulting memory exhaustion can interrupt system availability.

The record

CVE
CVE-2026-53378
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 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=6.19
  2. Affected versionversion=cfc27680ee208cdf7a61cda817b4158c4142595f <235b333e2878d791cee09e1e72f44611a9400114
  3. Affected versionversion=cfc27680ee208cdf7a61cda817b4158c4142595f <271059f1d9020e9ac967524e319fbbaa22d0475b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.19; version=cfc27680ee208cdf7a61cda817b4158c4142595f <235b333e2878d791cee09e1e72f44611a9400114; version=cfc27680ee208cdf7a61cda817b4158c4142595f <271059f1d9020e9ac967524e319fbbaa22d0475b

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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