CVE-2026-31512
Estado: AnalizadaMedia (5.5)—
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b
- https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f
- https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4
- https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86
- https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209
- https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6
- https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949
- https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4
JSON original (NVD)
Mostrar
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