libtirpc: Segmentation fault in makefd_xprt return value in svc_vc.c
Published Aug 30, 2018
7.5
HIGHCVSS 3.1
EPSS 3.86%
Description
A null-pointer dereference vulnerability was found in libtirpc before version 0.3.3-rc3. The return value of makefd_xprt() was not checked in all instances, which could lead to a crash when the server exhausted the maximum number of available file descriptors. A remote attacker could cause an rpc-based application to crash by flooding it with new connections.
Affected products
- Vendor n/a Product Libtirpc Defaultn/a
- Version 0.3.3-rc3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Libtirpc | n/a |
|
- < 0.3.3
- 14.04
- 16.04
- 18.04
- 8.0
- 7.0
- 7.0
- 7.4
- 7.4
- 7.5
- 7.6
- 7.0
No data.
Red Hat Enterprise Linux 7
libtirpc-0:0.2.4-0.10.el7
Fixed · RHBA-2017:1991
Red Hat Ceph Storage 2
libntirpc
Not affected
Red Hat Ceph Storage 3
libntirpc
Not affected
Red Hat Enterprise Linux 6
libtirpc
Will not fix
Red Hat Enterprise Linux 8
libtirpc
Not affected
Red Hat OpenShift Enterprise 3
libtirpc
Not affected
Red Hat Storage 3
libntirpc
Not affected
Red Hat Virtualization 4
libtirpc
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | libtirpc-0:0.2.4-0.10.el7 | Fixed | RHBA-2017:1991 |
| Red Hat Ceph Storage 2 | libntirpc | Not affected | n/a |
| Red Hat Ceph Storage 3 | libntirpc | Not affected | n/a |
| Red Hat Enterprise Linux 6 | libtirpc | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | libtirpc | Not affected | n/a |
| Red Hat OpenShift Enterprise 3 | libtirpc | Not affected | n/a |
| Red Hat Storage 3 | libntirpc | Not affected | n/a |
| Red Hat Virtualization 4 | libtirpc | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.86% (0.03861) | 89.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.86% (0.03861) | 88.78th | v5 (v2026.06.15) |
| Nov 21, 2025 | 2.34% (0.02344) | 84.35th | v4 (v2025.03.14) |
| Nov 18, 2025 | 4.18% (0.04185) | 87.58th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.80% (0.02803) | 84.86th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.83% (0.03832) | 80.00th | v4 (v2025.03.14) |
| Jul 20, 2024 | 2.63% (0.02631) | 90.48th | v3 (v2023.03.01) |
| Jun 14, 2024 | 2.63% (0.02631) | 90.39th | v3 (v2023.03.01) |
| Jan 21, 2024 | 3.60% (0.03601) | 90.76th | v3 (v2023.03.01) |
| Nov 8, 2023 | 5.01% (0.05014) | 92.00th | v3 (v2023.03.01) |
| Aug 24, 2023 | 5.29% (0.05288) | 92.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.67% (0.05666) | 92.09th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.08% (0.02080) | 50.39th | v1 |
| Jan 6, 2022 | 2.08% (0.02080) | 49.89th | v1 |
| Sep 1, 2021 | 2.08% (0.02080) | 77.32th | v1 |
| Apr 14, 2021 | 2.08% (0.02080) | 0.00th | v1 |
References (11)
- http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=1c77f7a869bdea2a34799d774460d1f9983d45f0 x_refsource_CONFIRM
- https://access.redhat.com/errata/RHBA-2017:1991 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-14622 Vendor Advisory
- https://bugzilla.novell.com/show_bug.cgi?id=968175 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1620293 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14622 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/08/msg00034.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-14622
- https://usn.ubuntu.com/3759-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3759-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-14622
| Link | Providers | Tags |
|---|---|---|
| http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=1c77f7a869bdea2a34799d774460d1f9983d45f0 | x_refsource_CONFIRM | |
| https://access.redhat.com/errata/RHBA-2017:1991 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-14622 | Vendor Advisory | |
| https://bugzilla.novell.com/show_bug.cgi?id=968175 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1620293 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14622 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/08/msg00034.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-14622 | ||
| https://usn.ubuntu.com/3759-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://usn.ubuntu.com/3759-2/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-14622 |
Change history (0)
No recorded changes yet.