| Name | CVE-2025-0725 |
| Description | When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| curl (PTS) | bullseye | 7.74.0-1.3+deb11u13 | vulnerable |
| bullseye (security) | 7.74.0-1.3+deb11u14 | vulnerable |
| bookworm | 7.88.1-10+deb12u8 | vulnerable |
| bookworm (security) | 7.88.1-10+deb12u5 | vulnerable |
| sid, trixie | 8.11.1-1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| curl | source | (unstable) | (unfixed) | unimportant | | |
Notes
https://curl.se/docs/CVE-2025-0725.html
Introduced with: https://github.com/curl/curl/commit/019c4088cfcca0d2b7c5cc4f52ca5dac0c616089 (curl-7_10_5)
Fixed by: https://github.com/curl/curl/commit/76f83f0db23846e254d940ec7fe141010077eb88 (curl-8_12_0)
Patch only drops officially support for zlib before 1.2.0.4
Can only be triggered when using ancient runtime zlib of version 1.2.0.3 or older