Description
Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
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 | 5.28.0-3 | — |
| Debian 13 | perl | 5.28.0-3 | — |
| Debian 12 | perl | 5.28.0-3 | — |
| Debian 9 | perl | 5.24.1-3+deb9u5 | DSA-4347-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | perl | 5.26.1-6ubuntu0.3 | USN-3834-1 |
| Ubuntu 16.04 LTS | perl | 5.22.1-9ubuntu0.6 | USN-3834-1 |
| Ubuntu 14.04 LTS | perl | 5.18.2-2ubuntu1.7 | USN-3834-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | rh-perl524-perl +5 | 4:5.24.0-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Attribute-Handlers | 0.99-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Devel-Peek +1 | 1.23-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Devel-SelfStubber +1 | 1.05-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Errno | 1.25-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-ExtUtils-Embed | 1.33-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-IO | 1.36-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-IO-Zlib | 1:1.10-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Locale-Maketext-Simple | 1:0.21-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Math-BigInt-FastCalc | 0.40-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Math-BigRat | 0.2608.02-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Math-Complex | 1.59-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Memoize | 1.03-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Module-Loaded | 1:0.08-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Net-Ping | 2.43-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Pod-Html | 1.22-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Test | 1.28-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-Time-Piece | 1.31-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-bignum | 0.42-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-core +1 | 5.24.0-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl524-perl-open | 1.10-381.el6 | RHSA-2019:0010 |
| RHEL 3 | rh-perl526-perl +6 | 4:5.26.3-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Attribute-Handlers | 0.99-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Devel-Peek | 1.26-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Devel-SelfStubber +1 | 1.06-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Errno | 1.28-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-ExtUtils-Embed | 1.34-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-IO | 1.38-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-IO-Zlib | 1:1.10-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Locale-Maketext-Simple | 1:0.21-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Math-Complex | 1.59-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Memoize | 1.03-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Module-CoreList +1 | 1:5.20181130-1.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Module-Loaded | 1:0.08-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Net-Ping | 2.55-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Pod-Html | 1.22.02-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-SelfLoader | 1.23-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Test | 1.30-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-Time-Piece | 1.31-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-open | 1.11-405.el7 | RHSA-2019:0001 |
| RHEL 3 | rh-perl526-perl-utils | 5.26.3-405.el7 | RHSA-2019:0001 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | perl +10 | 5.42.2-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-AutoSplit +1 | 5.74-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-B | 1.89-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Benchmark +1 | 1.27-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Class-Struct | 0.68-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-DBM_Filter | 0.07-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Devel-Peek | 1.36-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Devel-SelfStubber | 1.06-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-DynaLoader | 1.57-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-English +1 | 1.11-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Errno | 1.38-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-ExtUtils-Constant | 0.25-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Fcntl +1 | 1.20-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-File-Basename | 2.86-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-File-Compare | 1.100.800-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-File-Copy | 2.41-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-File-DosGlob | 1.12-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-File-Find | 1.44-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-File-stat +3 | 1.14-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-FileHandle | 2.05-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-FindBin | 1.54-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-GDBM_File +1 | 1.24-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Hash-Util | 0.32-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-I18N-LangTags | 0.45-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-I18N-Langinfo | 0.24-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-IO | 1.55-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Locale-Maketext-Simple | 0.21-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Math-Complex | 1.63-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Memoize +1 | 1.17-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Module-Loaded | 0.08-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-NDBM_File | 1.18-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-NEXT | 0.69-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Net +3 | 1.04-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Opcode | 1.69-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-POSIX | 2.23-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Pod-Html +1 | 1.35-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Safe | 2.47-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Search-Dict | 1.08-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-SelectSaver +2 | 1.02-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-SelfLoader | 1.28-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Symbol | 1.09-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Sys-Hostname | 1.25-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Term-Complete | 1.403-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Test | 1.31-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Thread | 3.06-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Thread-Semaphore | 2.13-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Tie | 4.6-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Tie-Memoize | 1.1-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Time-Piece | 1.3600-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-Unicode-UCD | 0.81-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-base +2 | 2.27-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-blib | 1.07-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-debugger | 1.60-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-deprecate | 0.04-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-encoding-warnings | 0.14-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-filetest +1 | 1.03-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-if | 0.61.000-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-less +1 | 0.03-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-lib | 0.65-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-mro | 1.29-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-open +1 | 1.13-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-overload +1 | 1.40-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-overloading | 0.02-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-sigtrap +2 | 1.10-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-sort | 2.06-524.1.hum1 | RHSA-2026:7604 |
| Red Hat Hardened Images 1 | perl-vars +2 | 1.05-524.1.hum1 | RHSA-2026:7604 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | perl | 5.26.1-7.6.1 | SUSE-SU-2018:4187-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | perl | 5.26.3-r0 | — |
| Alpine v3.23 | perl | 5.26.3-r0 | — |
| Alpine v3.22 | perl | 5.26.3-r0 | — |
| Alpine v3.21 | perl | 5.26.3-r0 | — |
| Alpine v3.20 | perl | 5.26.3-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | perl | 5.26.3-r0 | — |
| Alpine v3.18 | perl | 5.26.3-r0 | — |
| Alpine v3.17 | perl | 5.26.3-r0 | — |
| Alpine v3.16 | perl | 5.26.3-r0 | — |
| Alpine v3.15 | perl | 5.26.3-r0 | — |
| Alpine v3.14 | perl | 5.26.3-r0 | — |
| Alpine v3.13 | perl | 5.26.3-r0 | — |
| Alpine v3.12 | perl | 5.26.3-r0 | — |
| Alpine v3.11 | perl | 5.26.3-r0 | — |
| Alpine v3.10 | perl | 5.26.3-r0 | — |
| Alpine v3.9 | perl | 5.26.3-r0 | — |
| Alpine v3.8 | perl | 5.26.3-r0 | — |
| Alpine v3.7 | perl | 5.26.3-r0 | — |
| Alpine v3.6 | perl | 5.24.4-r2 | — |
Advisories 7
- RHSA-2026:7604 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2019:0001 Red Hat Security Advisory: rh-perl526-perl security and enhancement update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2019:0010 Red Hat Security Advisory: rh-perl524-perl security update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- USN-3834-1 perl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4347-1 perl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:4187-1 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0211 Perl: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 28, 2025
References
- DSA-4347 vendor-advisory
- 106145 vdb-entry
- 1042181 vdb-entry
- RHSA-2019:0010 vendor-advisory
- FEDORA-2018-9dbe983805 vendor-advisory
- RHSA-2019:0001 vendor-advisory
- USN-3834-1 vendor-advisory
- GLSA-201909-01 vendor-advisory
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://security.netapp.com/advisory/ntap-20190221-0003/
- https://metacpan.org/changes/release/SHAY/perl-5.26.3
- https://github.com/Perl/perl5/commit/19a498a461d7c81ae3507c450953d1148efecf4f
- https://bugzilla.redhat.com/show_bug.cgi?id=1646751
- https://rt.perl.org/Ticket/Display.html?id=131649