CVE-2026-46140 (GCVE-0-2026-46140)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:35 – Updated: 2026-07-04 11:50
VLAI
Title
Bluetooth: btmtk: validate WMT event SKB length before struct access
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9 bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f0457842215438786e2e205ad06a4fbb8ab63cd0 , < 36c85f7029484d5ede769f8873d16e9c8e35533c (git)
Affected: d019930b0049fc2648a6b279893d8ad330596e81 , < c411cf1bfde951cfa821809cf4020ba177f76e0c (git)
Affected: d019930b0049fc2648a6b279893d8ad330596e81 , < 624fb79dadc1b65757986a9d0fdde5c0cf3fe179 (git)
Affected: d019930b0049fc2648a6b279893d8ad330596e81 , < 70d37a8b9229e394cc17ddad47e90b81d80fcd09 (git)
Affected: d019930b0049fc2648a6b279893d8ad330596e81 , < 634a4408c0615c523cf7531790f4f14a422b9206 (git)
Affected: 6.6.142 , < 6.6.144 (semver)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.6.144 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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}



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