Description
Heap-based buffer overflow in the pack function in Perl before 5.26.2 allows context-dependent attackers to execute arbitrary code via a large item count.
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 | — |
| Debian 9 | perl | 5.24.1-3+deb9u3 | DSA-4172-1 |
| Debian 8 | perl | 5.20.2-3+deb8u10 | DSA-4172-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | perl | 5.14.2-21+deb7u6 | DLA-1345-1 |
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 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | perl +10 | 5.42.2-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-AutoSplit +1 | 5.74-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-B | 1.89-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Benchmark +1 | 1.27-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Class-Struct | 0.68-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-DBM_Filter | 0.07-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Devel-Peek | 1.36-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Devel-SelfStubber | 1.06-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-DynaLoader | 1.57-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-English +1 | 1.11-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Errno | 1.38-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-ExtUtils-Constant | 0.25-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Fcntl +1 | 1.20-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-File-Basename | 2.86-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-File-Compare | 1.100.800-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-File-Copy | 2.41-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-File-DosGlob | 1.12-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-File-Find | 1.44-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-File-stat +3 | 1.14-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-FileHandle | 2.05-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-FindBin | 1.54-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-GDBM_File +1 | 1.24-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Hash-Util | 0.32-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-I18N-LangTags | 0.45-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-I18N-Langinfo | 0.24-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-IO | 1.55-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Locale-Maketext-Simple | 0.21-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Math-Complex | 1.63-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Memoize +1 | 1.17-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Module-Loaded | 0.08-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-NDBM_File | 1.18-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-NEXT | 0.69-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Net +3 | 1.04-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Opcode | 1.69-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-POSIX | 2.23-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Pod-Html +1 | 1.35-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Safe | 2.47-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Search-Dict | 1.08-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-SelectSaver +2 | 1.02-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-SelfLoader | 1.28-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Symbol | 1.09-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Sys-Hostname | 1.25-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Term-Complete | 1.403-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Test | 1.31-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Thread | 3.06-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Thread-Semaphore | 2.13-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Tie | 4.6-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Tie-Memoize | 1.1-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Time-Piece | 1.3600-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-Unicode-UCD | 0.81-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-base +2 | 2.27-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-blib | 1.07-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-debugger | 1.60-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-deprecate | 0.04-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-encoding-warnings | 0.14-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-filetest +1 | 1.03-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-if | 0.61.000-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-less +1 | 0.03-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-lib | 0.65-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-mro | 1.29-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-open +1 | 1.13-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-overload +1 | 1.40-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-overloading | 0.02-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-sigtrap +2 | 1.10-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-sort | 2.06-524.hum1 | RHSA-2026:6206 |
| Red Hat Hardened Images 1 | perl-vars +2 | 1.05-524.hum1 | RHSA-2026:6206 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLES 15 SP5 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLES 15 SP4 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLES 15 SP3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLES 15 SP2 | perl | 5.26.1-150000.7.18.1 | SUSE-SU-2024:1630-1 |
Show 25 more (older releases, extended support, other products)Fewer releases
| 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 |
| SLES 11 SP4 | perl | 5.10.0-64.81.10.1 | SUSE-SU-2018:0976-1 |
| SLES for SAP 15 SP4 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLES for SAP 15 SP3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLES for SAP 15 SP2 | perl | 5.26.1-150000.7.18.1 | SUSE-SU-2024:1630-1 |
| 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 |
| SLES for SAP 11 SP4 | perl | 5.10.0-64.81.10.1 | SUSE-SU-2018:0976-1 |
| SLE Micro 5.5 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-2, SUSE-SU-2024:1762-1 |
| SLE Micro 5.4 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLE Micro 5.3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLE Micro 5.2 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLE Micro 5.1 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLE HPC 15 SP4 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLE HPC 15 SP3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SLE HPC 15 SP2 | perl | 5.26.1-150000.7.18.1 | SUSE-SU-2024:1630-1 |
| SUSE OpenStack Cloud 7 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
| SUSE Manager Server 4.3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SUSE Manager Proxy 4.3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SUSE Enterprise Storage 7.1 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| SUSE Enterprise Storage 4 | perl | 5.18.2-12.14.1 | SUSE-SU-2018:1972-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| openSUSE Leap 15.5 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
| openSUSE Leap Micro 5.3 | perl | 5.26.1-150300.17.17.1 | SUSE-SU-2024:1762-1 |
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 13
- RHSA-2026:6206 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- USN-3625-1 perl vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4172-1 perl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1345-1 perl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:0976-1 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1972-2 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1630-1 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:1762-1 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-2024:1762-2 Security update for perl SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0225 Dell PowerProtect Data Domain: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2025
- 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
- USN-3625-2 vendor-advisory
- 103953 vdb-entry
- [debian-lts-announce] 20180414 [SECURITY] [DLA 1345-1] perl security update mailing-list
- 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=131844