kernel: bnep_add_connection does not check if l2cap socket is available allowing privilege escalation
Published Dec 5, 2017
7.8
HIGHCVSS 3.1
EPSS 0.43%
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
No data.
Configuration 1
- ≥ 3.2 · < 3.2.97
- ≥ 3.3 · < 3.10.108
- ≥ 3.11 · < 3.16.52
- ≥ 3.17 · < 3.18.64
Configuration 2
- 12.04
- 14.04
Configuration 3
- 8.0
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-alt
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-alt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6, as namespaces feature, which is required for an attack, is not present in these products. This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE, as this flaw was already fixed in this products.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.43% (0.00434) | 35.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00434) | 34.42th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00101) | 25.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.22% (0.01219) | 29.99th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.22% (0.01219) | 0.00th | v1 |
References (14)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=71bb99a02b32b4cc4265118e85f6035ca72923f0 x_refsource_CONFIRMPatchVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/102084 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-15868 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1522893 Issue Tracking
- https://github.com/torvalds/linux/commit/71bb99a02b32b4cc4265118e85f6035ca72923f0 x_refsource_CONFIRMIssue Tracking
- https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-15868
- https://patchwork.kernel.org/patch/9882449/ x_refsource_CONFIRMPatchVendor Advisory
- https://source.android.com/security/bulletin/pixel/2017-12-01 x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/3583-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3583-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-15868
- https://www.debian.org/security/2018/dsa-4082 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.