kernel: Null pointer dereference in rds_atomic_free_op() allowing denial-of-service
Published Jan 11, 2018
5.5
MEDIUMCVSS 3.0
EPSS 7.21%
Description
In the Linux kernel through 4.14.13, the rds_cmsg_atomic function in net/rds/rdma.c mishandles cases where page pinning fails or an invalid address is supplied, leading to an rds_atomic_free_op NULL pointer dereference.
Affected products
No data.
Configuration 1
- ≤ 4.14.13
Configuration 2
- 7.0
- 8.0
Configuration 3
- 12.04
- 14.04
- 16.04
- 17.10
No data.
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-693.21.1.rt56.607.el6rt
Fixed · RHSA-2018:0470
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
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-693.21.1.rt56.607.el6rt | Fixed | RHSA-2018:0470 |
| 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 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This is not currently planned to be addressed in future updates of the product due to its life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/. 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 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 (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.21% (0.07207) | 94.13th | v5 (v2026.06.15) |
| Sep 22, 2026 | 7.21% (0.07207) | 94.03th | v5 (v2026.06.15) |
| Sep 21, 2026 | 17.59% (0.17589) | 97.07th | v5 (v2026.06.15) |
| Sep 6, 2026 | 7.21% (0.07207) | 93.89th | v5 (v2026.06.15) |
| Sep 5, 2026 | 17.59% (0.17589) | 97.01th | v5 (v2026.06.15) |
| Aug 30, 2026 | 7.21% (0.07207) | 93.86th | v5 (v2026.06.15) |
| Aug 28, 2026 | 18.69% (0.18690) | 97.13th | v5 (v2026.06.15) |
| Aug 24, 2026 | 7.68% (0.07679) | 94.12th | v5 (v2026.06.15) |
| Aug 23, 2026 | 18.69% (0.18690) | 97.12th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.82% (0.07823) | 93.89th | v5 (v2026.06.15) |
| Apr 13, 2026 | 2.80% (0.02801) | 86.11th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.77% (0.01773) | 81.43th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00064) | 30.08th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.06% (0.00064) | 28.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00064) | 26.16th | 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 | 52.93% (0.52930) | 99.08th | v1 |
| Sep 16, 2021 | 52.93% (0.52930) | 99.68th | v1 |
| Sep 14, 2021 | 13.21% (0.13208) | 96.12th | v1 |
| Sep 1, 2021 | 52.93% (0.52930) | 99.68th | v1 |
| Apr 14, 2021 | 52.93% (0.52930) | 0.00th | v1 |
References (19)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7d11f77f84b27cef452cee332f4e469503084737 x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html x_refsource_MISC
- http://www.securityfocus.com/bid/102510 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0470 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-5333 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1533891 Issue Tracking
- https://github.com/torvalds/linux/commit/7d11f77f84b27cef452cee332f4e469503084737 x_refsource_CONFIRMPatchVendor 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-2018-5333
- 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://usn.ubuntu.com/3617-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3617-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3617-3/ vendor-advisoryx_refsource_UBUNTUThird 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/3632-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-5333
- https://www.debian.org/security/2018/dsa-4187 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.