ubuntu-cve-2026-40393
Vulnerability from osv_ubuntu
Published
2026-04-12 19:16
Modified
2026-06-15 14:00
Summary
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.
Severity
8.1 (High)
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@10.1.3-0ubuntu0.6?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.2.1-1ubuntu3",
"9.2.2-1ubuntu1",
"9.2.2-1ubuntu2",
"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": "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"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@18.0.5-0ubuntu0~16.04.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"12.0.6-0ubuntu0.16.04.1",
"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",
"18.0.5-0ubuntu0~16.04.1"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@20.0.8-0ubuntu1~18.04.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"17.2.2-0ubuntu1",
"17.2.4-0ubuntu2",
"17.3.3-0ubuntu1",
"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",
"19.0.2-1ubuntu1.1~18.04.1",
"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",
"20.0.8-0ubuntu1~18.04.1"
]
},
{
"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"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@21.2.6-0ubuntu0.1~20.04.2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"19.2.1-1ubuntu1",
"19.2.4-1ubuntu1",
"19.3.3-1ubuntu1",
"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",
"21.0.3-0ubuntu0.2~20.04.1",
"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": {
"availability": "No subscription required",
"binaries": [
{
"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",
"binary_version": "23.2.1-1ubuntu3.1~22.04.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@23.2.1-1ubuntu3.1~22.04.4?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "23.2.1-1ubuntu3.1~22.04.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"21.2.2-1ubuntu1",
"21.3.5-1ubuntu1",
"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",
"23.0.4-0ubuntu1~22.04.1",
"23.2.1-1ubuntu3.1~22.04.2",
"23.2.1-1ubuntu3.1~22.04.3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"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",
"binary_version": "25.2.8-0ubuntu0.24.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@25.2.8-0ubuntu0.24.04.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "25.2.8-0ubuntu0.24.04.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"23.2.1-1ubuntu3",
"23.2.1-1ubuntu4",
"23.3.0-2ubuntu3",
"23.3.3-1ubuntu2",
"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",
"25.0.7-0ubuntu0.24.04.1",
"25.0.7-0ubuntu0.24.04.2",
"25.2.8-0ubuntu0.24.04.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"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",
"binary_version": "25.2.8-0ubuntu0.25.10.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "mesa",
"purl": "pkg:deb/ubuntu/mesa@25.2.8-0ubuntu0.25.10.2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "25.2.8-0ubuntu0.25.10.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
}
],
"aliases": [],
"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.",
"id": "UBUNTU-CVE-2026-40393",
"modified": "2026-06-15T14:00:38Z",
"published": "2026-04-12T19:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-40393"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-40393"
},
{
"type": "REPORT",
"url": "https://lists.freedesktop.org/archives/mesa-dev/2026-February/226597.html"
},
{
"type": "REPORT",
"url": "https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39866"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8427-1"
}
],
"related": [
"USN-8427-1"
],
"schema_version": "1.7.0",
"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"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-40393"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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