Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ad_addcomment function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15876.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Netatalk | Netatalk | 3.1.12 | — |
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 | netatalk | 3.1.13~ds-1 | — |
| Debian 13 | netatalk | 3.1.13~ds-1 | — |
| Debian 11 | netatalk | 3.1.12~ds-8+deb11u1 | DSA-5503-1 |
| Debian 10 | netatalk | 3.1.12~ds-3+deb10u1 | DLA-3426-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | netatalk | 3.1.12~ds-9ubuntu0.22.04.1 | USN-6146-1 |
| Ubuntu 20.04 LTS | netatalk | 3.1.12~ds-4ubuntu0.20.04.1 | USN-6146-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | netatalk | 2.2.6-1ubuntu0.18.04.2+esm1 | USN-6146-1 |
| Ubuntu Pro 16.04 LTS | netatalk | 2.2.5-1ubuntu0.2+esm1 | USN-6146-1 |
| Ubuntu Pro 14.04 LTS | netatalk | 2.2.2-1ubuntu2.2+esm1 | USN-6146-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | netatalk | 3.1.13-r0 | — |
| Alpine v3.23 | netatalk | 3.1.13-r0 | — |
| Alpine v3.22 | netatalk | 3.1.13-r0 | — |
| Alpine v3.21 | netatalk | 3.1.13-r0 | — |
| Alpine v3.20 | netatalk | 3.1.13-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | netatalk | 3.1.13-r0 | — |
| Alpine v3.18 | netatalk | 3.1.13-r0 | — |
| Alpine v3.17 | netatalk | 3.1.13-r0 | — |
| Alpine v3.16 | netatalk | 3.1.13-r0 | — |
Advisories 3
- USN-6146-1 netatalk vulnerabilities Ubuntu Security Notices (USN) · Jun 29, 2026
- DSA-5503-1 netatalk - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3426-1 netatalk - security update Debian Security (DSA / DLA) · Mar 9, 2026