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.
{
"binaries": [
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libd3dadapter9-mesa"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libegl-mesa0"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libgbm1"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libgl1-mesa-dri"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libglapi-mesa"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libglx-mesa0"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libosmesa6"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "libxatracker2"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "mesa-drm-shim"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "mesa-opencl-icd"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "mesa-va-drivers"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "mesa-vdpau-drivers"
},
{
"binary_version": "23.2.1-1ubuntu3.1~22.04.4",
"binary_name": "mesa-vulkan-drivers"
}
],
"availability": "No subscription required"
}
{
"ecosystem": "Ubuntu:22.04:LTS",
"cves": [
{
"id": "CVE-2026-40393",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8427-1.json"
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "libegl-mesa0"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "libgbm1"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "libgl1-mesa-dri"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "libglx-mesa0"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-drm-shim"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-libgallium"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-opencl-icd"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-teflon-delegate"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-va-drivers"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-vdpau-drivers"
},
{
"binary_version": "25.2.8-0ubuntu0.24.04.2",
"binary_name": "mesa-vulkan-drivers"
}
]
}
{
"ecosystem": "Ubuntu:24.04:LTS",
"cves": [
{
"id": "CVE-2026-40393",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8427-1.json"
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "libegl-mesa0"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "libgbm1"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "libgl1-mesa-dri"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "libglx-mesa0"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-drm-shim"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-libgallium"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-opencl-icd"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-teflon-delegate"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-va-drivers"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-vdpau-drivers"
},
{
"binary_version": "25.2.8-0ubuntu0.25.10.2",
"binary_name": "mesa-vulkan-drivers"
}
]
}
{
"ecosystem": "Ubuntu:25.10",
"cves": [
{
"id": "CVE-2026-40393",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8427-1.json"