VDB
DEBIAN-CVE-2026-31512
DEBIAN-CVE-2026-31512
PUBLISHED
CVSS 5.5 MEDIUM
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv() l2cap_ecred_data_rcv() reads the SDU length field from skb->data using get_unaligned_le16() without first verifying that skb contains at least L2CAP_SDULEN_SIZE (2) bytes. When skb->len is less than 2, this reads past the valid data in the skb. The ERTM reassembly path correctly calls pskb_may_pull() before reading the SDU length (l2cap_reassemble_sdu, L2CAP_SAR_START case). Apply the same validation to the Enhanced Credit Based Flow Control data path.
Risk Scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | linux | 0, 6.12.85-1, 6.12.74-2 |
| Debian:11 | linux | 5.16, 6.18.9-1, 6.18.9-1~bpo13+1 |
| Debian:11 | linux-6.1 | 6.1.106-3, 6.1.106-3, 6.1.106-3 |
| Debian:14 | linux | 6.19.6-2, 6.19.6-2, 6.19.8-1 |
| Debian:12 | linux | 6.6.15-1, 6.6.15-2, 6.6.3-1~exp1 |
Timeline
- Apr 22, 2026 CVE Published
- May 2, 2026 CVE Updated