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staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init() padapter->HalData is allocated via vzalloc(), but incorrectly freed using kfree() in the rtw_sdio_if1_init() error path. Using kfree() to release this vmalloc-backed buffer can lead to memory corruption. Use rtw_hal_data_deinit() to pair the free correctly and free HalData with vfree(). The bug was first flagged by an experimental static analysis tool we are developing for kernel memory-management bugs. Manual inspection confirms that the issue is still present in current mainline. An x86_64 allyesconfig build showed no new warnings. As we do not have suitable RTL8723BS SDIO hardware to test with, no runtime testing was able to be performed.

Announced Source revision 1
Original source ↗

CVE-2026-98160

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-2026-98160

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": "ff6d1ba247b5c62bdb678f1069abc86ad88a1402",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "d6158333d630a1b21d8914feaf77a6f5deb185d9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "6c017ab2b0e1b60b5be94636c94720347213d78b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "4520d673d49dabfd42c008a33889251025f7d6d5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "423574feaed192063ef0cd0813fb85425f39e539",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "737c928ff5092d7e55128a232c231248fc993777",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "911190f0b9511c3c81f2f2484414c1ae26f636b3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b",
        "lessThan": "264676418b726baca7be49171e306b6aa05cceb0",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/staging/rtl8723bs/os_dep/sdio_intf.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": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/staging/rtl8723bs/os_dep/sdio_intf.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98160

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#38250 · Revision 1
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Publisher date
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