CVE-2026-43062CWE-843

CVE-2026-43062

High · published May 5, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
26.9
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()

l2cap_ecred_reconf_rsp() casts the incoming data to struct

l2cap_ecred_conn_rsp (the ECRED *connection* response, 8 bytes with

result at offset 6) instead of struct l2cap_ecred_reconf_rsp (2 bytes

with result at offset 0).

This causes two problems:

- The sizeof(*rsp) length check requires 8 bytes instead of the

correct 2, so valid L2CAP_ECRED_RECONF_RSP packets are rejected

with -EPROTO.

- rsp->result reads from offset 6 instead of offset 0, returning

wrong data when the packet is large enough to pass the check.

Fix by using the correct type. Also pass the already byte-swapped

result variable to BT_DBG instead of the raw __le16 field.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00346 · 26.9th percentile
Weakness
CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')
Published
2026-05-05T20:16Z
Affected products (11)
ProductVersionsFixed in
linux/linux_kernel≥ 5.7, < 5.10.2535.10.253
linux/linux_kernel≥ 5.11, < 5.15.2035.15.203
linux/linux_kernel≥ 5.16, < 6.1.1676.1.167
linux/linux_kernel≥ 6.2, < 6.6.1306.6.130
linux/linux_kernel≥ 6.7, < 6.12.786.12.78
linux/linux_kernel≥ 6.13, < 6.18.206.18.20
linux/linux_kernel≥ 6.19, < 6.19.106.19.10
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (8)
EPSS history
Timeline
  • 05 MAY 15:17Z
    Bluetooth: L2CAP: Fix type confusion in l2cap_ecred_reconf_rsp()
    cvelistv5