Description
A flaw in the libapreq2 v2.07 to v2.13 multipart parser can deference a null pointer leading to a process crash. A remote attacker could send a request causing a process crash which could lead to a denial of service attack.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libapreq2 | 2.07 to 2.13 | — |
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 13 | libapreq2 | 2.13-6 | — |
| Debian 10 | libapreq2 | 2.13-7~deb10u1 | DSA-4541-1 |
| Debian 9 | libapreq2 | 2.13-7~deb9u1 | DSA-4541-1 |
| Debian 8 | libapreq2 | 2.13-4+deb8u1 | DLA-1944-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libapreq2 | 2.13-7~deb10u1build0.18.04.1 | USN-4558-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libapreq2 | 2.13-4ubuntu2+esm1 | USN-5041-1 |
| Ubuntu Pro 14.04 LTS | libapreq2 | 2.13-3ubuntu2+esm1 | USN-5041-1 |
Advisories 4
- USN-5041-1 libapreq2 vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-4558-1 libapreq2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4541-1 libapreq2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1944-1 libapreq2 - security update Debian Security (DSA / DLA) · Mar 9, 2026