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staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each iteration but only guards on i < pkt_len. When a malicious AP sends an AssocResponse whose last IE has only one byte remaining in the frame (the element_id byte lands at pkt_len-1), the loop reads pIE->length from pframe[pkt_len], which is one byte past the allocated receive buffer. Additionally, even when the header bytes are in bounds, pIE->length itself can extend the data window beyond pkt_len, silently passing a truncated IE to the handler functions. Add two guards at the top of the loop body: 1. Break if fewer than sizeof(*pIE) bytes remain (can't read header). 2. Break if the IE's declared data extends past pkt_len.

Announced Source revision 1
Original source ↗

CVE-2026-64444

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-64444

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "889ca6000ac7fa73457b041848fcb08e0d51b809",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "1a52a05471494546f955a58e8c170c0c796c52d5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "0406d746574e875d8778552eb674fcfbf5330bfb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "0970dd47726a57e52013594e9fbf667586eb3673",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "04f612dc03427e0b1ac80a2611b5ac0ba93ac446",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "7e7741c8315e4160aead00a60cdd6f81ab880717",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "f9654207e92283e0acac5d64fe5f8835383b5a23",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.12"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.12",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.96",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.39",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/staging/rtl8723bs/core/rtw_mlme_ext.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-64444

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41049 · Revision 1
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Publisher date
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