Description
An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.
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 | perl | 5.26.1-6 | — |
| Debian 13 | perl | 5.26.1-6 | — |
| Debian 12 | perl | 5.26.1-6 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | perl | 5.22.1-9ubuntu0.3 | USN-3625-1 |
| Ubuntu 14.04 LTS | perl | 5.18.2-2ubuntu1.4 | USN-3625-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | perl | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | rh-perl524-perl +5 | 4:5.24.0-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Attribute-Handlers | 0.99-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Devel-Peek +1 | 1.23-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Devel-SelfStubber +1 | 1.05-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Errno | 1.25-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-ExtUtils-Embed | 1.33-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-IO | 1.36-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-IO-Zlib | 1:1.10-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Locale-Maketext-Simple | 1:0.21-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Math-BigInt-FastCalc | 0.40-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Math-BigRat | 0.2608.02-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Math-Complex | 1.59-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Memoize | 1.03-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Module-Loaded | 1:0.08-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Net-Ping | 2.43-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Pod-Html | 1.22-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Test | 1.28-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-Time-Piece | 1.31-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-bignum | 0.42-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-core +1 | 5.24.0-380.el6 | RHSA-2018:1192 |
| RHEL 3 | rh-perl524-perl-open | 1.10-380.el6 | RHSA-2018:1192 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | perl | 5.18.2-12.11.1 | SUSE-SU-2018:1972-1, SUSE-SU-2018:1074-1 |
| SLES 12 SP2 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-2, SUSE-SU-2018:1972-1 |
| SLES 12 SP1 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
| SLES 12 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | perl | 5.18.2-12.11.1 | SUSE-SU-2018:1972-1, SUSE-SU-2018:1074-1 |
| SLES for SAP 12 SP2 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
| SLES for SAP 12 SP1 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
| SUSE OpenStack Cloud 7 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
| SUSE Enterprise Storage 4 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | perl | 5.26.2-r0 | — |
| Alpine v3.23 | perl | 5.26.2-r0 | — |
| Alpine v3.22 | perl | 5.26.2-r0 | — |
| Alpine v3.21 | perl | 5.26.2-r0 | — |
| Alpine v3.20 | perl | 5.26.2-r0 | — |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | perl | 5.26.2-r0 | — |
| Alpine v3.18 | perl | 5.26.2-r0 | — |
| Alpine v3.17 | perl | 5.26.2-r0 | — |
| Alpine v3.16 | perl | 5.26.2-r0 | — |
| Alpine v3.15 | perl | 5.26.2-r0 | — |
| Alpine v3.14 | perl | 5.26.2-r0 | — |
| Alpine v3.13 | perl | 5.26.2-r0 | — |
| Alpine v3.12 | perl | 5.26.2-r0 | — |
| Alpine v3.11 | perl | 5.26.2-r0 | — |
| Alpine v3.10 | perl | 5.26.2-r0 | — |
| Alpine v3.9 | perl | 5.26.2-r0 | — |
| Alpine v3.8 | perl | 5.26.2-r0 | — |
| Alpine v3.7 | perl | 5.26.2-r0 | — |
| Alpine v3.6 | perl | 5.24.4-r0 | — |
| Alpine v3.5 | perl | 5.24.4-r0 | — |
Advisories 6
- RHSA-2018:1192 Red Hat Security Advisory: rh-perl524-perl security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3625-1 perl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2018:1972-2 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1972-1 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1074-1 Security update for perl SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1102 Perl: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2024
References
- 1042004 vdb-entry
- RHSA-2018:1192 vendor-advisory
- 1040681 vdb-entry
- USN-3625-1 vendor-advisory
- DSA-4172 vendor-advisory
- GLSA-201909-01 vendor-advisory
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://rt.perl.org/Public/Bug/Display.html?id=132227