CVE-2026-46006

Local kernel memory corruption via offset wraparound

Published May 27, 2026 · Updated May 27, 2026

Integer overflow in the Linux kernel nouveau driver allows local users to corrupt kernel memory through a crafted GPU push-buffer relocation. nouveau_gem_pushbuf_reloc_apply() adds 4 to the attacker-controlled 32-bit reloc_bo_offset before comparing it with a size_t buffer size, so 0xFFFFFFFC wraps to zero and bypasses the bounds check. Any unprivileged local user with access to the DRM render node can force an out-of-bounds kernel write that can disclose or corrupt kernel data or crash the system.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Integer overflow in the Linux kernel nouveau driver allows local users to corrupt kernel memory through a crafted GPU push-buffer relocation. nouveau_gem_pushbuf_reloc_apply() adds 4 to the attacker-controlled 32-bit reloc_bo_offset before comparing it with a size_t buffer size, so 0xFFFFFFFC wraps to zero and bypasses the bounds check. Any unprivileged local user with access to the DRM render node can force an out-of-bounds kernel write that can disclose or corrupt kernel data or crash the system.

The record

CVE
CVE-2026-46006
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=2.6.34
  2. Affected versionversion=a1606a9596e54da90ad6209071b357a4c1b0fa82 <2fc87d37be1b730a149b035f9375fdb8cc5333a5
  3. Affected versionversion=a1606a9596e54da90ad6209071b357a4c1b0fa82 <332884f5eb79dd60a7162b079d09d39208567a31
  4. Affected versionversion=a1606a9596e54da90ad6209071b357a4c1b0fa82 <d749a9a0ee4014681487e7ae549901aa8c176637
  5. Affected versionversion=a1606a9596e54da90ad6209071b357a4c1b0fa82 <e441d5c23ec644c8d27593db3b8928e8933512a9
  6. Affected versionversion=a1606a9596e54da90ad6209071b357a4c1b0fa82 <fa297e919d1680c38ab268ff952b1698dac987f6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=2.6.34; version=a1606a9596e54da90ad6209071b357a4c1b0fa82 <2fc87d37be1b730a149b035f9375fdb8cc5333a5; version=a1606a9596e54da90ad6209071b357a4c1b0fa82 <332884f5eb79dd60a7162b079d09d39208567a31; version=a1606a9596e54da90ad6209071b357a4c1b0fa82 <d749a9a0ee4014681487e7ae549901aa8c176637; version=a1606a9596e54da90ad6209071b357a4c1b0fa82 <e441d5c23ec644c8d27593db3b8928e8933512a9; version=a1606a9596e54da90ad6209071b357a4c1b0fa82 <fa297e919d1680c38ab268ff952b1698dac987f6

Published CVSS scores

7.8kernel.orgCVSS: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 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-787Out-of-bounds Write

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo