Description
There is a heap-based buffer over-read in the fmt_entry function in tinfo/comp_hash.c in the terminfo library in ncurses before 6.1-20191012.
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 | ncurses | 6.1+20191019-1 | — |
| Debian 13 | ncurses | 6.1+20191019-1 | — |
| Debian 12 | ncurses | 6.1+20191019-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | ncurses | 6.3-2ubuntu0.1 | USN-6099-1 |
| Ubuntu 20.04 LTS | ncurses | 6.1+20191019-1ubuntu1 | USN-6099-1 |
| Ubuntu 18.04 LTS | ncurses | 6.1-1ubuntu1.18.04.1 | USN-6099-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | ncurses | 6.0+20160213-1ubuntu1+esm2 | USN-6099-1, USN-5477-1 |
| Ubuntu Pro 14.04 LTS | ncurses | 5.9+20140118-1ubuntu1+esm2 | USN-6099-1, USN-5477-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | ncurses +6 | 6.1-9.20180224.el8 | RHSA-2021:4426 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | ncurses +6 | 6.1-9.20180224.el8 | ALSA-2021:4426 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | ncurses | 6.1-9.20180224.el8 | RLSA-2021:4426 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | ncurses | 6.1-5.6.2 | SUSE-SU-2019:2997-1 |
| SLES 15 | ncurses | 6.1-5.6.2 | SUSE-SU-2019:2997-1 |
| SLES 12 SP5 | ncurses | 5.9-69.1 | SUSE-SU-2019:3094-1 |
| SLES 12 SP4 | ncurses | 5.9-69.1 | SUSE-SU-2019:3094-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | ncurses | 5.9-69.1 | SUSE-SU-2019:3094-1 |
| SLES for SAP 12 SP4 | ncurses | 5.9-69.1 | SUSE-SU-2019:3094-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | ncurses | 6.1-lp151.6.3.1 | openSUSE-SU-2019:2551-1 |
| openSUSE Leap 15.0 | ncurses | 6.1-lp150.9.1 | openSUSE-SU-2019:2550-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | ncurses +7 | 6.0-8.20170212.amzn2.1.6 | ALAS2-2024-2412 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | ncurses +6 | 6.1-9.20180224.el8 | ELSA-2021-4426 |
Advisories 14
- ALSA-2021:4426 Moderate: ncurses security update AlmaLinux Security Advisories · Oct 29, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- RHSA-2021:4426 Red Hat Security Advisory: ncurses security update Red Hat Security Advisories (RHSA) · Jul 28, 2026
- USN-6099-1 ncurses vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-5477-1 ncurses vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- WID-SEC-2022-0571 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2026
- RLSA-2021:4426 Moderate: ncurses security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2019:2997-1 Security update for ncurses SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2550-1 Security update for ncurses SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2551-1 Security update for ncurses SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- SUSE-SU-2019:3094-1 Security update for ncurses SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2024-2412 Moderate: ncurses security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 9, 2024
- ELSA-2021-4426 Moderate: ncurses security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 16, 2021
References
- https://lists.gnu.org/archive/html/bug-ncurses/2019-10/msg00045.html
- https://lists.gnu.org/archive/html/bug-ncurses/2019-10/msg00013.html
- openSUSE-SU-2019:2551 vendor-advisory
- openSUSE-SU-2019:2550 vendor-advisory
- GLSA-202101-28 vendor-advisory