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Ubuntu 25.10 Mesa Important Denial Of Service USN-8427-1 CVE-2026-40393

ubuntu
Calendar Grey June 15, 2026
Scroller Ubuntu Esm H88
Mesa in Ubuntu may crash or execute arbitrary code from crafted input. Update now for protection.
Mesa could be made to crash or run programs if it received specially crafted input.

Summary

Mesa could be made to crash or run programs if it received specially

crafted input.

Software Description:

- mesa: free implementation of the EGL API

Details:

It was discovered that Mesa did not properly validate memory allocation

sizes in WebGPU under certain circumstances. An attacker could use this

issue to cause Mesa to crash, resulting in a denial of service, or possibly

execute arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important memory allocation mesa

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  libegl-mesa0                    25.2.8-0ubuntu0.25.10.2
  libgbm1                         25.2.8-0ubuntu0.25.10.2
  libgl1-mesa-dri                 25.2.8-0ubuntu0.25.10.2
  libglx-mesa0                    25.2.8-0ubuntu0.25.10.2
  mesa-drm-shim                   25.2.8-0ubuntu0.25.10.2
  mesa-libgallium                 25.2.8-0ubuntu0.25.10.2
  mesa-opencl-icd                 25.2.8-0ubuntu0.25.10.2
  mesa-teflon-delegate            25.2.8-0ubuntu0.25.10.2
  mesa-va-drivers                 25.2.8-0ubuntu0.25.10.2
  mesa-vdpau-drivers              25.2.8-0ubuntu0.25.10.2
  mesa-vulkan-drivers             25.2.8-0ubuntu0.25.10.2

Ubuntu 24.04 LTS
  libegl-mesa0                    25.2.8-0ubuntu0.24.04.2
  libgbm1                         25.2.8-0ubuntu0.24.04.2
  libgl1-mesa-dri                 25.2.8-0ubuntu0.24.04.2
  libglx-mesa0                    25.2.8-0ubuntu0.24.04.2
  mesa-drm-shim                   25.2.8-0ubuntu0.24.04.2
  mesa-libgallium                 25.2.8-0ubuntu0.24.04.2
  mesa-opencl-icd                 25.2.8-0ubuntu0.24.04.2
  mesa-teflon-delegate            25.2.8-0ubuntu0.24.04.2
  mesa-va-drivers                 25.2.8-0ubuntu0.24.04.2
  mesa-vdpau-drivers              25.2.8-0ubuntu0.24.04.2
  mesa-vulkan-drivers             25.2.8-0ubuntu0.24.04.2

Ubuntu 22.04 LTS
  libd3dadapter9-mesa             23.2.1-1ubuntu3.1~22.04.4
  libegl-mesa0                    23.2.1-1ubuntu3.1~22.04.4
  libgbm1                         23.2.1-1ubuntu3.1~22.04.4
  libgl1-mesa-dri                 23.2.1-1ubuntu3.1~22.04.4
  libglapi-mesa                   23.2.1-1ubuntu3.1~22.04.4
  libglx-mesa0                    23.2.1-1ubuntu3.1~22.04.4
  libosmesa6                      23.2.1-1ubuntu3.1~22.04.4
  libxatracker2                   23.2.1-1ubuntu3.1~22.04.4
  mesa-drm-shim                   23.2.1-1ubuntu3.1~22.04.4
  mesa-opencl-icd                 23.2.1-1ubuntu3.1~22.04.4
  mesa-va-drivers                 23.2.1-1ubuntu3.1~22.04.4
  mesa-vdpau-drivers              23.2.1-1ubuntu3.1~22.04.4
  mesa-vulkan-drivers             23.2.1-1ubuntu3.1~22.04.4

After a standard system update you need to restart your session to make all
the necessary changes.

References

https://ubuntu.com/security/notices/USN-8427-1

CVE-2026-40393

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8427-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important memory allocation mesa

Package Information

https://launchpad.net/ubuntu/+source/mesa/25.2.8-0ubuntu0.25.10.2
https://launchpad.net/ubuntu/+source/mesa/25.2.8-0ubuntu0.24.04.2
https://launchpad.net/ubuntu/+source/mesa/23.2.1-1ubuntu3.1~22.04.4

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