UBUNTU-CVE-2026-40393

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Source
https://ubuntu.com/security/CVE-2026-40393
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40393
Upstream
  • CVE-2026-40393
Published
2026-04-12T19:16:00Z
Modified
2026-04-27T18:57:24.410042Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.

References

Affected packages

Ubuntu:14.04:LTS
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@10.1.3-0ubuntu0.6?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

9.*
9.2.1-1ubuntu3
9.2.2-1ubuntu1
9.2.2-1ubuntu2
10.*
10.0.0-1ubuntu2
10.0.0-1ubuntu3
10.0.0-1ubuntu4
10.0.1-1ubuntu2
10.1.0~rc1-1ubuntu1
10.1.0~rc1-1ubuntu3
10.1.0~rc1-1ubuntu4
10.1.0~rc3-0ubuntu1
10.1.0~rc3-0ubuntu2
10.1.0~rc3-0ubuntu3
10.1.0-1ubuntu1
10.1.0-4ubuntu1
10.1.0-4ubuntu2
10.1.0-4ubuntu4
10.1.0-4ubuntu5
10.1.3-0ubuntu0.1
10.1.3-0ubuntu0.2
10.1.3-0ubuntu0.3
10.1.3-0ubuntu0.4
10.1.3-0ubuntu0.5
10.1.3-0ubuntu0.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libegl1-mesa",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libegl1-mesa-drivers",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libgl1-mesa-glx",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libglapi-mesa",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libgles1-mesa",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libgles2-mesa",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libopenvg1-mesa",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libosmesa6",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libwayland-egl1-mesa",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "libxatracker2",
            "binary_version": "10.1.3-0ubuntu0.6"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "10.1.3-0ubuntu0.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"
Ubuntu:16.04:LTS
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@18.0.5-0ubuntu0~16.04.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

11.*
11.0.2-1ubuntu4
11.0.4-1ubuntu1
11.0.5-1ubuntu1
11.0.5-1ubuntu2
11.0.6-1ubuntu1
11.0.7-1ubuntu1
11.0.8-1ubuntu1
11.1.1-1ubuntu2
11.1.2-1ubuntu1
11.1.2-1ubuntu2
11.2.0-1ubuntu1
11.2.0-1ubuntu2
11.2.0-1ubuntu2.1
11.2.0-1ubuntu2.2
12.*
12.0.6-0ubuntu0.16.04.1
17.*
17.0.7-0ubuntu0.16.04.1
17.0.7-0ubuntu0.16.04.2
17.2.4-0ubuntu1~16.04.2
17.2.4-0ubuntu1~16.04.4
17.2.8-0ubuntu0~16.04.1
18.*
18.0.5-0ubuntu0~16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libegl1-mesa",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libgl1-mesa-glx",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libglapi-mesa",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libgles1-mesa",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libgles2-mesa",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libosmesa6",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libwayland-egl1-mesa",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "libxatracker2",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "mesa-opencl-icd",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "mesa-va-drivers",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        },
        {
            "binary_name": "mesa-vulkan-drivers",
            "binary_version": "18.0.5-0ubuntu0~16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"
Ubuntu:18.04:LTS
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@20.0.8-0ubuntu1~18.04.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

17.*
17.2.2-0ubuntu1
17.2.4-0ubuntu2
17.3.3-0ubuntu1
18.*
18.0.0~rc4-1ubuntu3
18.0.0~rc5-1ubuntu1
18.0.5-0ubuntu0~18.04.1
18.2.2-0ubuntu1~18.04.1
18.2.2-0ubuntu1~18.04.2
18.2.8-0ubuntu0~18.04.2
19.*
19.0.2-1ubuntu1.1~18.04.1
19.0.2-1ubuntu1.1~18.04.2
19.0.8-0ubuntu0~18.04.1
19.0.8-0ubuntu0~18.04.2
19.0.8-0ubuntu0~18.04.3
19.2.1-1ubuntu1~18.04.1
19.2.8-0ubuntu0~18.04.1
19.2.8-0ubuntu0~18.04.2
19.2.8-0ubuntu0~18.04.3
20.*
20.0.8-0ubuntu1~18.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libd3dadapter9-mesa",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libegl-mesa0",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libegl1-mesa",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libgl1-mesa-glx",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libglapi-mesa",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libgles2-mesa",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libglx-mesa0",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libosmesa6",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libwayland-egl1-mesa",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "libxatracker2",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "mesa-opencl-icd",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "mesa-va-drivers",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        },
        {
            "binary_name": "mesa-vulkan-drivers",
            "binary_version": "20.0.8-0ubuntu1~18.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"
Ubuntu:20.04:LTS
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@21.2.6-0ubuntu0.1~20.04.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

19.*
19.2.1-1ubuntu1
19.2.4-1ubuntu1
19.3.3-1ubuntu1
20.*
20.0.0-1ubuntu1
20.0.2-1ubuntu1
20.0.4-1ubuntu1
20.0.4-2ubuntu1
20.0.8-0ubuntu1~20.04.1
20.2.6-0ubuntu0.20.04.1
21.*
21.0.3-0ubuntu0.2~20.04.1
21.0.3-0ubuntu0.3~20.04.1
21.0.3-0ubuntu0.3~20.04.2
21.0.3-0ubuntu0.3~20.04.3
21.0.3-0ubuntu0.3~20.04.4
21.0.3-0ubuntu0.3~20.04.5
21.2.6-0ubuntu0.1~20.04.1
21.2.6-0ubuntu0.1~20.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libd3dadapter9-mesa",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libegl-mesa0",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libegl1-mesa",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libgl1-mesa-glx",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libglapi-mesa",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libgles2-mesa",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libglx-mesa0",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libosmesa6",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libwayland-egl1-mesa",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "libxatracker2",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "mesa-opencl-icd",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "mesa-va-drivers",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        },
        {
            "binary_name": "mesa-vulkan-drivers",
            "binary_version": "21.2.6-0ubuntu0.1~20.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"
Ubuntu:22.04:LTS
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@23.2.1-1ubuntu3.1~22.04.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

21.*
21.2.2-1ubuntu1
21.3.5-1ubuntu1
22.*
22.0.0-0ubuntu2
22.0.1-1ubuntu1
22.0.1-1ubuntu2
22.0.1-1ubuntu2.1
22.0.5-0ubuntu0.1
22.0.5-0ubuntu0.3
22.2.5-0ubuntu0.1~22.04.1
22.2.5-0ubuntu0.1~22.04.2
22.2.5-0ubuntu0.1~22.04.3
23.*
23.0.4-0ubuntu1~22.04.1
23.2.1-1ubuntu3.1~22.04.2
23.2.1-1ubuntu3.1~22.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libd3dadapter9-mesa",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libegl-mesa0",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libglapi-mesa",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libglx-mesa0",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libosmesa6",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "libxatracker2",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "mesa-drm-shim",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "mesa-opencl-icd",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "mesa-va-drivers",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        },
        {
            "binary_name": "mesa-vulkan-drivers",
            "binary_version": "23.2.1-1ubuntu3.1~22.04.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"
Ubuntu:24.04:LTS
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@25.2.8-0ubuntu0.24.04.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

23.*
23.2.1-1ubuntu3
23.2.1-1ubuntu4
23.3.0-2ubuntu3
23.3.3-1ubuntu2
24.*
24.0.1-1ubuntu1
24.0.3-1ubuntu3
24.0.3-1ubuntu4
24.0.5-1ubuntu1
24.0.9-0ubuntu0.1
24.0.9-0ubuntu0.2
24.0.9-0ubuntu0.3
24.2.8-1ubuntu1~24.04.1
25.*
25.0.7-0ubuntu0.24.04.1
25.0.7-0ubuntu0.24.04.2
25.2.8-0ubuntu0.24.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libegl-mesa0",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "libglx-mesa0",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-drm-shim",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-libgallium",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-opencl-icd",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-teflon-delegate",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-va-drivers",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        },
        {
            "binary_name": "mesa-vulkan-drivers",
            "binary_version": "25.2.8-0ubuntu0.24.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"
Ubuntu:25.10
mesa

Package

Name
mesa
Purl
pkg:deb/ubuntu/mesa@25.2.8-0ubuntu0.25.10.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

25.*
25.0.3-1ubuntu2
25.0.7-0ubuntu1
25.0.7-0ubuntu2
25.0.7-0ubuntu3
25.1.5-1ubuntu1
25.1.7-1ubuntu1
25.2.1-2ubuntu1
25.2.2-1ubuntu1
25.2.3-1ubuntu1
25.2.8-0ubuntu0.25.10.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libegl-mesa0",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "libgbm1",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "libgl1-mesa-dri",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "libglx-mesa0",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-drm-shim",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-libgallium",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-opencl-icd",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-teflon-delegate",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-va-drivers",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-vdpau-drivers",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        },
        {
            "binary_name": "mesa-vulkan-drivers",
            "binary_version": "25.2.8-0ubuntu0.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40393.json"