CVE-2026-31512

MEDIUM EPSS 2.4%
Published Apr 22, 20262mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 15

VendorProductVersionRange
linuxlinux_kernel*≥3.14.1  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.131
linuxlinux_kernel*≥6.7  –  <6.12.80
linuxlinux_kernel*≥6.13  –  <6.18.21
linuxlinux_kernel*≥6.19  –  <6.19.11
linuxlinux_kernel3.14any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4
    Patch