Description
Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.
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 | curl | 7.50.1-1 | — |
| Debian 13 | curl | 7.50.1-1 | — |
| Debian 12 | curl | 7.50.1-1 | — |
| Debian 8 | curl | 7.38.0-4+deb8u4 | DSA-3638-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | curl | 7.47.0-1ubuntu2.1 | USN-3048-1 |
| Ubuntu 14.04 LTS | curl | 7.35.0-1ubuntu2.8 | USN-3048-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | httpd24-curl +2 | 7.61.1-1.el6 | RHSA-2018:3558 |
| RHEL 3 | httpd24-httpd +5 | 2.4.34-7.el6 | RHSA-2018:3558 |
| RHEL 3 | httpd24-mod_md | 2.4.34-7.el7 | RHSA-2018:3558 |
| RHEL 3 | httpd24-mod_ssl +1 | 1:2.4.34-7.el6 | RHSA-2018:3558 |
| RHEL 3 | httpd24-nghttp2 +2 | 1.7.1-7.el6 | RHSA-2018:3558 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | curl | 7.37.0-28.1 | SUSE-SU-2016:2330-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | curl | 7.37.0-28.1 | SUSE-SU-2016:2330-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | curl | 7.50.1-r0 | — |
| Alpine v3.23 | curl | 7.50.1-r0 | — |
| Alpine v3.22 | curl | 7.50.1-r0 | — |
| Alpine v3.21 | curl | 7.50.1-r0 | — |
| Alpine v3.20 | curl | 7.50.1-r0 | — |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | curl | 7.50.1-r0 | — |
| Alpine v3.18 | curl | 7.50.1-r0 | — |
| Alpine v3.17 | curl | 7.50.1-r0 | — |
| Alpine v3.16 | curl | 7.50.1-r0 | — |
| Alpine v3.15 | curl | 7.50.1-r0 | — |
| Alpine v3.14 | curl | 7.50.1-r0 | — |
| Alpine v3.13 | curl | 7.50.1-r0 | — |
| Alpine v3.12 | curl | 7.50.1-r0 | — |
| Alpine v3.11 | curl | 7.50.1 | — |
| Alpine v3.10 | curl | 7.50.1-r0 | — |
| Alpine v3.9 | curl | 7.50.1-r0 | — |
| Alpine v3.8 | curl | 7.50.1 | — |
| Alpine v3.7 | curl | 7.50.1 | — |
| Alpine v3.6 | curl | 7.50.1 | — |
| Alpine v3.5 | curl | 7.50.1-r0 | — |
| Alpine v3.4 | curl | 7.50.1-r0 | — |
| Alpine v3.3 | curl | 7.49.1-r1 | — |
| Alpine v3.2 | curl | 7.49.1-r1 | — |
Advisories 5
- RHSA-2018:3558 Red Hat Security Advisory: httpd24 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- USN-3048-1 curl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3638-1 curl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:2330-1 Security update for curl SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
References
- RHSA-2018:3558 vendor-advisory
- https://source.android.com/security/bulletin/2016-12-01.html
- SSA:2016-219-01 vendor-advisory
- 92306 vdb-entry
- DSA-3638 vendor-advisory
- https://curl.haxx.se/docs/adv_20160803C.html
- openSUSE-SU-2016:2227 vendor-advisory
- https://www.tenable.com/security/tns-2016-18
- openSUSE-SU-2016:2379 vendor-advisory
- 1036536 vdb-entry
- FEDORA-2016-24316f1f56 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- FEDORA-2016-8354baae0f vendor-advisory
- GLSA-201701-47 vendor-advisory
- USN-3048-1 vendor-advisory