CVE-2026-17544 · cross-distro fix matrix

CVE-2026-17544: Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.

Affects 2 Linux releases across 3 (distro × package) combinations. First disclosed: 2026-07-30.

CVSS v3:CRITICAL · 9.8(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-17544 has a known fix. Run the listed command on that distro to remediate.

Debian trixie

Source: Debian Security Tracker

php8.4→ fixed in8.4.24-1~deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y php8.4
```

Alpine edge

Source: Alpine secdb

php84→ fixed in8.4.24-r0
```
apk update && apk add --upgrade php84
```
php85→ fixed in8.5.9-r0
```
apk update && apk add --upgrade php85
```

Are YOU affected by CVE-2026-17544?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2026-17544dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. From $9/mo, 14-day free trial, cancel anytime.

See StackPatch (from $9/mo)