Ubuntu USN · USN-8467-2

Perl vulnerabilities

Published: Thu, 02 Jul 2026 06:15

CVE-2026-8376CVE-2026-42496

Summary

Several security issues were fixed in Perl.

Details

USN-8467-1 fixed vulnerabilities in Perl. This update provides the corresponding fix for Perl on Ubuntu 25.10. Original advisory details: It was discovered that Perl's Archive::Tar module incorrectly handled symlink and hardlink targets during extraction. An attacker could use this issue to read or overwrite arbitrary files outside the extraction directory. (CVE-2026-42496) It was discovered that Perl had a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-8376)

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu questing

perl→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libperl-dev→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libperl-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libperl5.40→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libperl5.40
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
perl→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
perl-base→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y perl-base
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
perl-debug→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y perl-debug
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
perl-doc→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y perl-doc
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
perl-modules-5.40→5.40.1-6ubuntu0.1apt_upgrade
Standard apt upgrade. Install 5.40.1-6ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y perl-modules-5.40
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8467-2?

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