kernel: Null pointer dereference in net/rds/rdma.c:__rds_rdma_map() allowing local attackers to cause denial-of-service
Published Feb 26, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.67%
Description
A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to RDS_GET_MR and RDS_GET_MR_FOR_DEST.
Affected products
No data.
Configuration 1
- < 4.14.7
Configuration 2
- 7.0
- 8.0
Configuration 3
- 12.04
- 14.04
- 16.04
- 17.10
No data.
Red Hat Enterprise Linux 5
kernel
Will not fix
Red Hat Enterprise Linux 6
kernel
Will not fix
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 Linux 8
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 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 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
Red Hat statement
This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future Linux kernel updates for the respective releases may address this issue. This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 7, its real-time kernel, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE, as a code with the flaw is not built and shipped with the products listed.
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:N/I:N/A:H
AV:L/AC:L/Au:N/C:N/I:N/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 | 0.67% (0.00666) | 50.01th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.68% (0.00676) | 47.23th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00080) | 21.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | 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 | 1.77% (0.01769) | 35.01th | v1 |
| Jan 6, 2022 | 1.77% (0.01769) | 34.31th | v1 |
| Sep 1, 2021 | 1.77% (0.01769) | 74.20th | v1 |
| Apr 14, 2021 | 1.77% (0.01769) | 0.00th | v1 |
References (18)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f3069c6d33f6ae63a1668737bc78aaaa51bff7ca x_refsource_MISCPatchVendor Advisory
- http://www.securityfocus.com/bid/103185 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-7492 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1527393 x_refsource_MISCIssue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/f3069c6d33f6ae63a1668737bc78aaaa51bff7ca x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-7492
- https://patchwork.kernel.org/patch/10096441/ x_refsource_MISCPatchThird Party Advisory
- https://usn.ubuntu.com/3619-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3619-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3674-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3674-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3677-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3677-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-7492
- https://www.debian.org/security/2018/dsa-4187 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.7 x_refsource_MISCPatchVendor Advisory
- https://xorl.wordpress.com/2017/12/18/linux-kernel-rdma-null-pointer-dereference/ x_refsource_MISCExploitPatchThird Party Advisory
Change history (0)
No recorded changes yet.