github - ghsa-x52f-2whg-fhgm

GHSA-X52F-2WHG-FHGM

Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 2025-12-16 15:30

Details

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.

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{
  "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": []
}

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

Vulnerability from cvelistv5 – Published: 2025-12-16 14:44 – Updated: 2025-12-16 14:44

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

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/a54e2b2db1b7de2e0…
	https://git.kernel.org/stable/c/df191dd9f4c7249d9…
	https://git.kernel.org/stable/c/c0d93d69e1472ba75…
	https://git.kernel.org/stable/c/154828bf9559b9c84…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a54e2b2db1b7de2e008b4f62eec35aaefcc663c5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < df191dd9f4c7249d98ada55634fa8ac19089b8cb (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c0d93d69e1472ba75b78898979b90a98ba2a2501 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 154828bf9559b9c8421fc2f0d7f7f76b3683aaed (git)

Linux

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)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8723bs/core/rtw_ieee80211.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
              "lessThan": "df191dd9f4c7249d98ada55634fa8ac19089b8cb",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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            }
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.62",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.17.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                  "versionEndExcluding": "6.17.12",
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                },
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/154828bf9559b9c8421fc2f0d7f7f76b3683aaed"
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      "title": "staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68256",
    "datePublished": "2025-12-16T14:44:58.829Z",
    "dateReserved": "2025-12-16T13:41:40.267Z",
    "dateUpdated": "2025-12-16T14:44:58.829Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-X52F-2WHG-FHGM

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

Tags

Sightings

Nomenclature