CVE-2026-72264

Service interruption via tridentfb probe memory leak

Published Aug 15, 2026 · Updated Aug 15, 2026

Memory leak in the tridentfb PCI probe in Linux allows local users to exhaust kernel memory through repeated probe failures. trident_pci_probe() allocates modelist entries with fb_videomode_to_modelist(), but subsequent error branches return without calling fb_destroy_modelist(). Exploitation requires local low-privilege access and a supported PCI or AGP Trident graphics card; repeated failures can interrupt the system by depleting memory.

CVSS severity5.5
Medium
EPSS probability0.21%
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 tridentfb PCI probe in Linux allows local users to exhaust kernel memory through repeated probe failures. trident_pci_probe() allocates modelist entries with fb_videomode_to_modelist(), but subsequent error branches return without calling fb_destroy_modelist(). Exploitation requires local low-privilege access and a supported PCI or AGP Trident graphics card; repeated failures can interrupt the system by depleting memory.

The record

CVE
CVE-2026-72264
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.4
  2. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <089d149ccd7c3ac3d5e14ac65e558dcd9ec27583
  3. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <2efd9797331a559b93ab888f451838f87bd6dfa3
  4. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <4ebe2c3a7db6332aab3655f8c552ca387c1dc199
  5. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <5bdb6f11ad0398b11a3ae4d9104035f9dc628cdc
  6. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <7a35ec619d9af8ee128320975c1252b8ad65f1e8
  7. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <868432039a3fd7c2c0d515e48f33d5e43391666c
  8. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <8d16e5bc78478176621cac0f4c381136d3c92c5f
  9. Affected versionversion=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <de9cf16e39c0378716e9764fc0fbb6d4b45a1ee1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <089d149ccd7c3ac3d5e14ac65e558dcd9ec27583; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <2efd9797331a559b93ab888f451838f87bd6dfa3; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <4ebe2c3a7db6332aab3655f8c552ca387c1dc199; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <5bdb6f11ad0398b11a3ae4d9104035f9dc628cdc; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <7a35ec619d9af8ee128320975c1252b8ad65f1e8; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <868432039a3fd7c2c0d515e48f33d5e43391666c; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <8d16e5bc78478176621cac0f4c381136d3c92c5f; version=6a5e3bd0c8bc1025bb5092f54d5aea38216c665e <de9cf16e39c0378716e9764fc0fbb6d4b45a1ee1

Published CVSS scores

4.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7SUSECVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5Red HatCVSS: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-772Missing Release of Resource after Effective Lifetime
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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