| Name | CVE-2025-2849 |
| Description | A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1101500 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| upx-ucl (PTS) | bullseye | 3.96-2 | vulnerable |
| bullseye (security) | 3.96-2+deb11u1 | vulnerable |
| trixie | 4.2.4-1 | vulnerable |
| sid | 4.2.4-1.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| upx-ucl | source | (unstable) | 4.2.4-1.1 | | | 1101500 |
Notes
[bullseye] - upx-ucl <postponed> (Minor issue, local DoS)
https://github.com/upx/upx/issues/898
https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2