CVE-2017-15868

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-12-05 · updated 2026-06-17
Weakness: CWE-20

Description

The bnep_add_connection function in net/bluetooth/bnep/core.c in the Linux kernel before 3.19 does not ensure that an l2cap socket is available, which allows local users to gain privileges via a crafted application.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04
Debian Linux: 8.0
Linux kernel: from 3.2 before 3.2.97; from 3.3 before 3.10.108; from 3.11 before 3.16.52; from 3.17 before 3.18.64 — fixed in 3.10.108, 3.16.52, 3.18.64, 3.2.97

How to fix

Upgrade to a fixed version: Linux kernel 3.10.108, 3.16.52, 3.18.64, 3.2.97. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71bb99a02b32b4cc4265118e85f6035ca72923f0
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
http://www.securityfocus.com/bid/102084
https://github.com/torvalds/linux/commit/71bb99a02b32b4cc4265118e85f6035ca72923f0
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
https://patchwork.kernel.org/patch/9882449/
https://source.android.com/security/bulletin/pixel/2017-12-01
https://usn.ubuntu.com/3583-1/
https://usn.ubuntu.com/3583-2/
https://www.debian.org/security/2018/dsa-4082
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71bb99a02b32b4cc4265118e85f6035ca72923f0
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html

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