CVE-2024-46709

Kernel memory corruption via direct external-buffer page access

Published Sep 13, 2024 · Updated Aug 5, 2026

Memory corruption in affected Linux kernel vmwgfx versions allows local users to read, write, or crash the guest kernel via DRM ioctls. vmw_bo_cpu_blit_line accesses pages of imported external dma-bufs directly instead of mapping them through dma_buf, so non-CPU-mappable buffers yield invalid page mappings during a blit. Reachability requires local access to the vmwgfx DRM device and a multi-GPU virtual machine configuration; ordinary single-GPU desktop use does not trigger the flaw.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in affected Linux kernel vmwgfx versions allows local users to read, write, or crash the guest kernel via DRM ioctls. vmw_bo_cpu_blit_line accesses pages of imported external dma-bufs directly instead of mapping them through dma_buf, so non-CPU-mappable buffers yield invalid page mappings during a blit. Reachability requires local access to the vmwgfx DRM device and a multi-GPU virtual machine configuration; ordinary single-GPU desktop use does not trigger the flaw.

The record

CVE
CVE-2024-46709
Published
Sep 13, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=2cdb71c975a10b8774fcd199f16f9ea88948de50
  2. Affected versionversion=65674218b43f2dd54587ab2b06560e17c30d8b41 <9a9716bbbf3dd6b6cbefba3abcc89af8b72631f4
  3. Affected versionversion=6.6.29 <6.6.49
  4. Affected versionversion=6.8.8 <6.9
  5. Affected versionversion=6.9
  6. Affected versionversion=b32233accefff1338806f064fb9b62cf5bc0609f <50f1199250912568606b3778dc56646c10cb7b04
  7. Affected versionversion=b32233accefff1338806f064fb9b62cf5bc0609f <5c12391ee1ab59cb2f3be3f1f5e6d0fc0c2dc854

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2cdb71c975a10b8774fcd199f16f9ea88948de50; version=65674218b43f2dd54587ab2b06560e17c30d8b41 <9a9716bbbf3dd6b6cbefba3abcc89af8b72631f4; version=6.6.29 <6.6.49; version=6.8.8 <6.9; version=6.9; version=b32233accefff1338806f064fb9b62cf5bc0609f <50f1199250912568606b3778dc56646c10cb7b04; version=b32233accefff1338806f064fb9b62cf5bc0609f <5c12391ee1ab59cb2f3be3f1f5e6d0fc0c2dc854

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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

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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

T1068Exploitation for Privilege Escalation

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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