ghsa-x52f-2whg-fhgm
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
The Information Element (IE) parser rtw_get_ie() trusted the length byte of each IE without validating that the IE body (len bytes after the 2-byte header) fits inside the remaining frame buffer. A malformed frame can advertise an IE length larger than the available data, causing the parser to increment its pointer beyond the buffer end. This results in out-of-bounds reads or, depending on the pattern, an infinite loop.
Fix by validating that (offset + 2 + len) does not exceed the limit before accepting the IE or advancing to the next element.
This prevents OOB reads and ensures the parser terminates safely on malformed frames.
{
"affected": [],
"aliases": [
"CVE-2025-68256"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-16T15:15:54Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser\n\nThe Information Element (IE) parser rtw_get_ie() trusted the length\nbyte of each IE without validating that the IE body (len bytes after\nthe 2-byte header) fits inside the remaining frame buffer. A malformed\nframe can advertise an IE length larger than the available data, causing\nthe parser to increment its pointer beyond the buffer end. This results\nin out-of-bounds reads or, depending on the pattern, an infinite loop.\n\nFix by validating that (offset + 2 + len) does not exceed the limit\nbefore accepting the IE or advancing to the next element.\n\nThis prevents OOB reads and ensures the parser terminates safely on\nmalformed frames.",
"id": "GHSA-x52f-2whg-fhgm",
"modified": "2025-12-16T15:30:47Z",
"published": "2025-12-16T15:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68256"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/154828bf9559b9c8421fc2f0d7f7f76b3683aaed"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a54e2b2db1b7de2e008b4f62eec35aaefcc663c5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c0d93d69e1472ba75b78898979b90a98ba2a2501"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/df191dd9f4c7249d98ada55634fa8ac19089b8cb"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.