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CVE-2019-12495 · cross-distro fix matrix

CVE-2019-12495: An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-12495 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • tcc→ fixed in0.9.27+git20200814.62c30a4a-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y tcc

Debian bookworm

Source: Debian Security Tracker

  • tcc→ fixed in0.9.27+git20200814.62c30a4a-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y tcc

Debian trixie

Source: Debian Security Tracker

  • tcc→ fixed in0.9.27+git20200814.62c30a4a-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y tcc
Are YOU affected by CVE-2019-12495?

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.

curl https://mindsparkstack.com/scan.sh | bash
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