CVE-2026-46140
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/36c85f7029484d5ede769f8873d16e9c8e35533c
- https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179Patch
- https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206Patch
- https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09Patch
- https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0cPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.