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Bluetooth: MGMT: Fix list corruption and UAF in command complete handlers

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix list corruption and UAF in command complete handlers Commit 302a1f674c00 ("Bluetooth: MGMT: Fix possible UAFs") introduced mgmt_pending_valid(), which not only validates the pending command but also unlinks it from the pending list if it is valid. This change in semantics requires updates to several completion handlers to avoid list corruption and memory safety issues. This patch addresses two left-over issues from the aforementioned rework: 1. In mgmt_add_adv_patterns_monitor_complete(), mgmt_pending_remove() is replaced with mgmt_pending_free() in the success path. Since mgmt_pending_valid() already unlinks the command at the beginning of the function, calling mgmt_pending_remove() leads to a double list_del() and subsequent list corruption/kernel panic. 2. In set_mesh_complete(), the use of mgmt_pending_foreach() in the error path is removed. Since the current command is already unlinked by mgmt_pending_valid(), this foreach loop would incorrectly target other pending mesh commands, potentially freeing them while they are still being processed concurrently (leading to UAFs). The redundant mgmt_cmd_status() is also simplified to use cmd->opcode directly.

Announced Source revision 1
Original source ↗

CVE-2026-43059

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-2026-43059

Linux

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

Affected versions
Not stated in this record
Fixed versions
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Prerequisites
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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": "0b60eb04b8524e1b4b3f07fea0d16fda9a677d9a",
        "lessThan": "3d6de8467236cd763ddc7d06127689bdfbfbd8ff",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d71b98f253b079cbadc83266383f26fe7e9e103b",
        "lessThan": "695b45b2262fcb5e71bed1175aad59c72f92aa78",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "302a1f674c00dd5581ab8e493ef44767c5101aab",
        "lessThan": "b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "302a1f674c00dd5581ab8e493ef44767c5101aab",
        "lessThan": "02023ff760cc104a5d86a82ef5b8dd89098ad78d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "302a1f674c00dd5581ab8e493ef44767c5101aab",
        "lessThan": "17f89341cb4281d1da0e2fb0de5406ab7c4e25ef",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "87a1f16f07c6c43771754075e08f45b41d237421",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "6.6.140",
        "lessThan": "6.6.160",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.12.59",
        "lessThan": "6.12.78",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "6.16.10",
        "lessThan": "6.17",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "net/bluetooth/mgmt.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.17"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.17",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.6.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.78",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.20",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.10",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/bluetooth/mgmt.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-43059

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#46255 · Revision 1
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Publisher date
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