kernel: use-after-free in ucma_leave_multicast in drivers/infiniband/core/ucma.c
Published Jul 29, 2018
7.8
HIGHCVSS 3.0
EPSS 0.57%
Description
drivers/infiniband/core/ucma.c in the Linux kernel through 4.17.11 allows ucma_leave_multicast to access a certain data structure after a cleanup step in ucma_process_join, which allows attackers to cause a denial of service (use-after-free).
Affected products
No data.
Configuration 1
- ≤ 4.17.11
Configuration 2
- 12.04
- 14.04
- 16.04
- 18.04
Configuration 3
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-1062.el7
Fixed · RHSA-2019:2029
Red Hat Enterprise Linux 7
kernel-alt-0:4.14.0-115.7.1.el7a
Fixed · RHSA-2019:0831
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-1062.rt56.1022.el7
Fixed · RHSA-2019:2043
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise Linux 6
kernel
Will not fix
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-1062.el7 | Fixed | RHSA-2019:2029 |
| Red Hat Enterprise Linux 7 | kernel-alt-0:4.14.0-115.7.1.el7a | Fixed | RHSA-2019:0831 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-1062.rt56.1022.el7 | Fixed | RHSA-2019:2043 |
| Red Hat Enterprise Linux 5 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | kernel | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
AV:L/AC:L/Au:N/C:P/I:P/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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.57% (0.00566) | 44.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.57% (0.00571) | 42.53th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00048) | 11.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00064) | 30.08th | v3 (v2023.03.01) |
| Jul 17, 2024 | 0.06% (0.00064) | 28.52th | v3 (v2023.03.01) |
| Jul 23, 2023 | 0.06% (0.00064) | 26.48th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00046) | 14.04th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.81% (0.03812) | 72.37th | v1 |
| Jan 6, 2022 | 3.81% (0.03812) | 72.13th | v1 |
| Sep 1, 2021 | 3.81% (0.03812) | 82.91th | v1 |
| Apr 14, 2021 | 3.81% (0.03812) | 0.00th | v1 |
References (18)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cb2595c1393b4a5211534e6f0a0fbad369e21ad8 x_refsource_MISCPatchVendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0831 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2029 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2043 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2018-14734 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1611005 Issue Tracking
- https://github.com/torvalds/linux/commit/cb2595c1393b4a5211534e6f0a0fbad369e21ad8 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-14734
- https://usn.ubuntu.com/3797-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3797-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3847-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3847-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3847-3/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3849-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3849-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-14734
- https://www.debian.org/security/2018/dsa-4308 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.