kernel: use-after-free in drivers/bluetooth/hci_ldisc.c
Published Sep 4, 2019
7.0
HIGHCVSS 3.1
EPSS 0.64%
Description
An issue was discovered in the Linux kernel before 5.0.5. There is a use-after-free issue when hci_uart_register_dev() fails in hci_uart_set_proto() in drivers/bluetooth/hci_ldisc.c.
Affected products
No data.
Configuration 1
- ≥ 3.12.61 · < 3.13
- ≥ 4.7 · < 4.9.202
- ≥ 4.10 · < 4.14.109
- ≥ 4.15 · < 4.19.32
- ≥ 4.20 · < 5.0.5
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1160.el7
Fixed · RHSA-2020:4060
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.26.1.el7a
Fixed · RHSA-2020:2854
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1160.rt56.1131.el7
Fixed · RHSA-2020:4062
Red Hat Enterprise Linux 7.7 Extended Update Support
kernel-0:3.10.0-1062.43.1.el7
Fixed · RHSA-2021:0019
Red Hat Enterprise Linux 8
kernel-0:4.18.0-240.el8
Fixed · RHSA-2020:4431
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-240.rt7.54.el8
Fixed · RHSA-2020:4609
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1160.el7 | Fixed | RHSA-2020:4060 |
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.26.1.el7a | Fixed | RHSA-2020:2854 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1160.rt56.1131.el7 | Fixed | RHSA-2020:4062 |
| Red Hat Enterprise Linux 7.7 Extended Update Support | kernel-0:3.10.0-1062.43.1.el7 | Fixed | RHSA-2021:0019 |
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-240.el8 | Fixed | RHSA-2020:4431 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-240.rt7.54.el8 | Fixed | RHSA-2020:4609 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This flaw is rated as a Moderate as it requires the local attacker to have permissions to issue ioctl commands to the bluetooth device and bluetooth hardware to be present.
Red Hat mitigation
To mitigate this issue, prevent module hci_uart from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.64% (0.00643) | 48.92th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.67% (0.00668) | 46.88th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00033) | 6.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00074) | 34.11th | v3 (v2023.03.01) |
| Jun 10, 2024 | 0.04% (0.00045) | 14.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.80% (0.04804) | 74.65th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.66% (0.08659) | 85.81th | v1 |
| Jan 6, 2022 | 8.66% (0.08659) | 85.64th | v1 |
| Sep 1, 2021 | 2.07% (0.02069) | 77.27th | v1 |
| Apr 14, 2021 | 2.07% (0.02069) | 0.00th | v1 |
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html x_refsource_MISCThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2019-15917 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1760100 Issue Tracking
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.5 x_refsource_MISCRelease Notes
- https://github.com/torvalds/linux/commit/56897b217a1d0a91c9920cb418d6b3fe922f590a x_refsource_MISCPatch
- https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html mailing-listx_refsource_MLISTThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html mailing-listx_refsource_MLISTThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-15917
- https://seclists.org/bugtraq/2020/Jan/10 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20191004-0001/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-15917
Change history (0)
No recorded changes yet.