7.1

CVE-2026-46140

Bluetooth: btmtk: validate WMT event SKB length before struct access

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.6.142 < 6.7
Linux ≫ Linux Kernel Version >= 6.11 < 6.12.88
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.30
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.7
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.03
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0c
Patch
https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179
Patch
https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09
Patch
https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206
Patch
https://git.kernel.org/stable/c/36c85f7029484d5ede769f8873d16e9c8e35533c