CVE-2025-68256 (GCVE-0-2025-68256)

Vulnerability from cvelistv5 – Published: 2025-12-16 14:44 – Updated: 2026-01-02 15:34
VLAI?
Title
staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < a54e2b2db1b7de2e008b4f62eec35aaefcc663c5 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < df191dd9f4c7249d98ada55634fa8ac19089b8cb (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < c0d93d69e1472ba75b78898979b90a98ba2a2501 (git)
Affected: 554c0a3abf216c991c5ebddcdb2c08689ecd290b , < 154828bf9559b9c8421fc2f0d7f7f76b3683aaed (git)
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    Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 6.12.62 , ≤ 6.12.* (semver)
Unaffected: 6.17.12 , ≤ 6.17.* (semver)
Unaffected: 6.18.1 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)
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            "drivers/staging/rtl8723bs/core/rtw_ieee80211.c"
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          "value": "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."
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        "dateUpdated": "2026-01-02T15:34:34.753Z",
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        "shortName": "Linux"
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    "cveId": "CVE-2025-68256",
    "datePublished": "2025-12-16T14:44:58.829Z",
    "dateReserved": "2025-12-16T13:41:40.267Z",
    "dateUpdated": "2026-01-02T15:34:34.753Z",
    "state": "PUBLISHED"
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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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