CVE catalog

CVE-2018-11243

DEBIAN-CVE-2018-11243

Severity: High · CVSS 7.8CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: May 18, 2018, 5:29:00 PM UTC
Updated: Oct 21, 2026, 2:00:47 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.42% · Oct 25, 2026

PackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers to cause a denial of service (double free), limit the ability of a malware scanner to operate on the entire original data, or possibly have unspecified other impact via a crafted file.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	upx-ucl	13	`1.03+repack-5`	fixed
Debian	upx-ucl	14	`1.03+repack-5`	fixed
Opensuse	ucl	tumbleweed	`1.03-4.9`	fixed
Suse	ucl	package hub 15 sp1	`1.03-bp151.4.3.1`	fixed
Opensuse	upx	leap 15.1	`3.96-lp151.3.3.1`	fixed
Suse	upx	package hub 15 sp1	`3.96-bp151.4.3.1`	fixed
Opensuse	ucl	leap 15.1	`1.03-lp151.3.3.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	upx-ucl	deb	13	`1.03+repack-5`	Not reported	DEBIAN-CVE-2018-11243	Not reported
Debian	upx-ucl	deb	14	`1.03+repack-5`	Not reported	DEBIAN-CVE-2018-11243	Not reported
Opensuse	ucl	rpm	tumbleweed	`1.03-4.9`	Not reported	OPENSUSE-SU-2024:11477-1	Not reported
Suse	ucl	rpm	package hub 15 sp1	`1.03-bp151.4.3.1`	Not reported	OPENSUSE-SU-2020:0179-1	Not reported
Opensuse	upx	rpm	leap 15.1	`3.96-lp151.3.3.1`	Not reported	OPENSUSE-SU-2020:0163-1	Not reported
Suse	upx	rpm	package hub 15 sp1	`3.96-bp151.4.3.1`	Not reported	OPENSUSE-SU-2020:0180-1	Not reported
Opensuse	ucl	rpm	leap 15.1	`1.03-lp151.3.3.1`	Not reported	OPENSUSE-SU-2020:0162-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[libucl1]Unknown
Source package: [ucl]
Details (1)
- 1.03-6.7 · x86_64 · tumbleweed
  Unknown · Fixed: 1.03-4.9
  Version impact unknown
  pypi · ucl · opensuse · tumbleweed
[ucl-devel]Unknown
Source package: [ucl]
Details (1)
- 1.03-6.7 · x86_64 · tumbleweed
  Unknown · Fixed: 1.03-4.9
  Version impact unknown
  pypi · ucl · opensuse · tumbleweed

[Debian 13 (Trixie)]

[upx-ucl]Fixed
Details (2)
- 4.2.4-1.1 · amd64 · trixie
  Fixed · Fixed: 1.03+repack-5
  pypi · upx-ucl · debian · 13
- 4.2.4-1.1 · arm64 · trixie
  Fixed · Fixed: 1.03+repack-5
  pypi · upx-ucl · debian · 13

Observed: Oct 23, 2026, 5:33:38 PM UTC

References

[FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]