GHSA-MGJ5-5F6H-8742
Vulnerability from github – Published: 2026-04-03 18:31 – Updated: 2026-06-01 18:31In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Limit BO list entry count to prevent resource exhaustion
Userspace can pass an arbitrary number of BO list entries via the bo_number field. Although the previous multiplication overflow check prevents out-of-bounds allocation, a large number of entries could still cause excessive memory allocation (up to potentially gigabytes) and unnecessarily long list processing times.
Introduce a hard limit of 128k entries per BO list, which is more than sufficient for any realistic use case (e.g., a single list containing all buffers in a large scene). This prevents memory exhaustion attacks and ensures predictable performance.
Return -EINVAL if the requested entry count exceeds the limit
(cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)
{
"affected": [],
"aliases": [
"CVE-2026-23468"
],
"database_specific": {
"cwe_ids": [
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-03T16:16:34Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Limit BO list entry count to prevent resource exhaustion\n\nUserspace can pass an arbitrary number of BO list entries via the\nbo_number field. Although the previous multiplication overflow check\nprevents out-of-bounds allocation, a large number of entries could still\ncause excessive memory allocation (up to potentially gigabytes) and\nunnecessarily long list processing times.\n\nIntroduce a hard limit of 128k entries per BO list, which is more than\nsufficient for any realistic use case (e.g., a single list containing all\nbuffers in a large scene). This prevents memory exhaustion attacks and\nensures predictable performance.\n\nReturn -EINVAL if the requested entry count exceeds the limit\n\n(cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)",
"id": "GHSA-mgj5-5f6h-8742",
"modified": "2026-06-01T18:31:23Z",
"published": "2026-04-03T18:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23468"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2723e6851309531ce61aed74e93a0cd268cc862a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5ce4a38e6c2488949e373d5066303f9c128db614"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6270b1a5dab94665d7adce3dc78bc9066ed28bdd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c833d6c7199c5b5fca9ec95593acd539ec9c171c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e620378aab78d415bd8a15a2f91c145906520288"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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