CVE-2020-27788 · cross-distro fix matrix

CVE-2020-27788: An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-27788 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

upx-ucl→ fixed in3.96-1urgency: unimportant

sudo apt-get install --only-upgrade -y upx-ucl

Debian trixie

Source: Debian Security Tracker

upx-ucl→ fixed in3.96-1urgency: unimportant

sudo apt-get install --only-upgrade -y upx-ucl

Are YOU affected by CVE-2020-27788?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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