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 | Product | Affected | Fixed |
|---|---|---|---|
| [UNKNOWN] | libtirpc | 0.3.3-rc3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libtirpc | 0.2.5-1.3 | — |
| Debian 13 | libtirpc | 0.2.5-1.3 | — |
| Debian 12 | libtirpc | 0.2.5-1.3 | — |
| Debian 8 | libtirpc | 0.2.5-1+deb8u2 | DLA-1487-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libtirpc | 0.2.5-1.2ubuntu0.1 | USN-3759-1 |
| Ubuntu 16.04 LTS | libtirpc | 0.2.5-1ubuntu0.1 | USN-3759-1 |
| Ubuntu 14.04 LTS | libtirpc | 0.2.2-5ubuntu2.1 | USN-3759-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | libtirpc +1 | 0.2.4-0.10.el7 | RHBA-2017:1991 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | libtirpc | 0.2.1-1.13.6.1 | SUSE-SU-2018:3146-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | libtirpc | 0.2.1-1.13.6.1 | SUSE-SU-2018:3146-1 |
Advisories 4
- RHBA-2017:1991 Red Hat Bug Fix Advisory: libtirpc bug fix update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3759-1 libtirpc vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-1487-1 libtirpc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:3146-1 Security update for libtirpc SUSE / openSUSE Security Updates · Feb 4, 2026
References
- USN-3759-2 vendor-advisory
- USN-3759-1 vendor-advisory
- RHBA-2017:1991 vendor-advisory
- [debian-lts-announce] 20180831 [SECURITY] [DLA 1487-1] libtirpc security update mailing-list
- https://bugzilla.novell.com/show_bug.cgi?id=968175
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14622
- http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=1c77f7a869bdea2a34799d774460d1f9983d45f0