Description
It was discovered that the get_modified_conffiles() function in backends/packaging-apt-dpkg.py allowed injecting modified package names in a manner that would confuse the dpkg(1) call.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | apport | 2.20.1 – < 2.20.1-0ubuntu2.30+esm1, 2.20.9 – < 2.20.9-0ubuntu7.24, 2.20.11-0ubuntu27 – < 2.20.11-0ubuntu27.18, 2.20.11-0ubuntu50 – < 2.20.11-0ubuntu50.7, 2.20.11-0ubuntu65 – < 2.20.11-0ubuntu65.1, 2.14.1-0ubuntu3 – < 2.14.1-0ubuntu3.29+esm7 | 2.20.1-0ubuntu2.30+esm1 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | apport | 2.20.11-0ubuntu27.18 | USN-4965-1 |
| Ubuntu 18.04 LTS | apport | 2.20.9-0ubuntu7.24 | USN-4965-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | apport | 2.20.1-0ubuntu2.30+esm1 | USN-4965-2 |
| Ubuntu Pro 14.04 LTS | apport | 2.14.1-0ubuntu3.29+esm7 | USN-4965-2 |
Advisories 2
- USN-4965-2 apport vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-4965-1 apport vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026