GHSA-FHP7-73G8-WJ3G
Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 15:31In the Linux kernel, the following vulnerability has been resolved:
media: v4l2-ctrls: validate AV1 tile counts
The stateless AV1 decoders use tile_info.tile_cols and tile_rows as loop bounds and as indices into the mi__starts[] and _in_sbs_minus_1[] arrays, as the divisor for context_update_tile_id, and their product bounds the per-tile descriptor buffers, but std_validate_compound() does not bound these u8 fields. Reject a V4L2_CTRL_TYPE_AV1_FRAME whose tile_cols or tile_rows exceeds V4L2_AV1_MAX_TILE_COLS / _ROWS, or whose product exceeds V4L2_AV1_MAX_TILE_COUNT. A zero tile count is left to the consuming driver so the zero-initialised control that existing userspace submits is still accepted.
{
"affected": [],
"aliases": [
"CVE-2026-97575"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-25T11:17:08Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-ctrls: validate AV1 tile counts\n\nThe stateless AV1 decoders use tile_info.tile_cols and tile_rows as loop\nbounds and as indices into the mi_*_starts[] and *_in_sbs_minus_1[]\narrays, as the divisor for context_update_tile_id, and their product\nbounds the per-tile descriptor buffers, but std_validate_compound() does\nnot bound these u8 fields. Reject a V4L2_CTRL_TYPE_AV1_FRAME whose\ntile_cols or tile_rows exceeds V4L2_AV1_MAX_TILE_COLS / _ROWS, or whose\nproduct exceeds V4L2_AV1_MAX_TILE_COUNT. A zero tile count is left to the\nconsuming driver so the zero-initialised control that existing userspace\nsubmits is still accepted.",
"id": "GHSA-fhp7-73g8-wj3g",
"modified": "2026-09-25T15:31:42Z",
"published": "2026-09-25T12:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97575"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/439058ced617fbb3febc017b9e93bb7387f309e0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/85df9fc79b07f1cc7c953f930ae7e675d0c1e820"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c4c88b5ba85685043d171e0e9c9d00a8cf6a89e8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c8891da0186fe4c04bccbbd7d84b01a3c941ac7a"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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