GHSA-4C55-F2C6-F257
Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:31In the Linux kernel, the following vulnerability has been resolved:
media: i2c: ov02a10: fix endpoint parsing use-after-free
The ov02a10_check_hwcfg() function calls fwnode_handle_put(ep) immediately after allocating and parsing the endpoint. However, it subsequently calls fwnode_property_read_u32() using the same 'ep' handle, leading to a potential use-after-free.
Additionally, reading the optional 'ovti,mipi-clock-voltage' property used to overwrite the 'ret' variable. If the property was missing, 'ret' would become negative, and this failure code would be incorrectly returned at the end of the function, causing probe to fail entirely.
Fix the use-after-free by moving fwnode_property_read_u32() before the endpoint is parsed and freed. Avoid the error leak by not assigning the result of fwnode_property_read_u32() to 'ret'.
{
"affected": [],
"aliases": [
"CVE-2026-89888"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-16T11:16:57Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: i2c: ov02a10: fix endpoint parsing use-after-free\n\nThe ov02a10_check_hwcfg() function calls fwnode_handle_put(ep)\nimmediately after allocating and parsing the endpoint. However, it\nsubsequently calls fwnode_property_read_u32() using the same \u0027ep\u0027\nhandle, leading to a potential use-after-free.\n\nAdditionally, reading the optional \u0027ovti,mipi-clock-voltage\u0027 property\nused to overwrite the \u0027ret\u0027 variable. If the property was missing,\n\u0027ret\u0027 would become negative, and this failure code would be incorrectly\nreturned at the end of the function, causing probe to fail entirely.\n\nFix the use-after-free by moving fwnode_property_read_u32() before\nthe endpoint is parsed and freed. Avoid the error leak by not\nassigning the result of fwnode_property_read_u32() to \u0027ret\u0027.",
"id": "GHSA-4c55-f2c6-f257",
"modified": "2026-09-16T15:31:00Z",
"published": "2026-09-16T12:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89888"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/213b2489130357c8d3e8d4fb2bdab88791ce3185"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4c2988bf1ad2753240a38db10ce23e87ec542f8f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6e13784452785cd8402b228bea53bc6a027ade84"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8ddb3b69f67b0632ff3830da18de3e8dcaf5884b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/90f9b421fc6d4f2edab7521efdb1e58571468d33"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/94971ba0592ca77ec99b292226a4b398763315b8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9de48ba68f56de9fe20ebd3f9728d22af25f9a91"
}
],
"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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