CVE-2026-74381

Memory exhaustion via circular buffer-object references

Published Aug 15, 2026 · Updated Aug 15, 2026

Resource leak in the host1x GPU subsystem in affected Linux kernels allows local users to exhaust memory through cached buffer mappings. The tegra_bo_pin and gather_bo_pin callbacks add references that cached mappings retain until buffer-object destruction, while those references prevent that destruction. Local access to the TegraDRM userspace interface is required; repeated affected operations consume memory and interrupt service.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the host1x GPU subsystem in affected Linux kernels allows local users to exhaust memory through cached buffer mappings. The tegra_bo_pin and gather_bo_pin callbacks add references that cached mappings retain until buffer-object destruction, while those references prevent that destruction. Local access to the TegraDRM userspace interface is required; repeated affected operations consume memory and interrupt service.

The record

CVE
CVE-2026-74381
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
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

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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=1f39b1dfa53c84b56d7ad37fed44afda7004959d <0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602
  2. Affected versionversion=1f39b1dfa53c84b56d7ad37fed44afda7004959d <3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc
  3. Affected versionversion=1f39b1dfa53c84b56d7ad37fed44afda7004959d <71c017b3f83ff72638f2a1b1d6d4e7bc61d30231
  4. Affected versionversion=1f39b1dfa53c84b56d7ad37fed44afda7004959d <8c0d3cf0d5108c96317e0eca92b60dd368867cef
  5. Affected versionversion=1f39b1dfa53c84b56d7ad37fed44afda7004959d <af755456299d44e4ed6af3b7c70a7f03ea37fdf1
  6. Affected versionversion=1f39b1dfa53c84b56d7ad37fed44afda7004959d <df63c76f9c8d881ca7bce1aecfba512328d0527d
  7. Affected versionversion=5.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1f39b1dfa53c84b56d7ad37fed44afda7004959d <0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602; version=1f39b1dfa53c84b56d7ad37fed44afda7004959d <3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc; version=1f39b1dfa53c84b56d7ad37fed44afda7004959d <71c017b3f83ff72638f2a1b1d6d4e7bc61d30231; version=1f39b1dfa53c84b56d7ad37fed44afda7004959d <8c0d3cf0d5108c96317e0eca92b60dd368867cef; version=1f39b1dfa53c84b56d7ad37fed44afda7004959d <af755456299d44e4ed6af3b7c70a7f03ea37fdf1; version=1f39b1dfa53c84b56d7ad37fed44afda7004959d <df63c76f9c8d881ca7bce1aecfba512328d0527d; version=5.17

Published CVSS scores

3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5OracleCVSS: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

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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

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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