StackPatch is liveSee product

Back to CVE digest
CVE-2021-35525 · cross-distro fix matrix

CVE-2021-35525: PostSRSd before 1.11 allows a denial of service (subprocess hang) if Postfix sends certain long data fields such as multiple concatenated email addresses. NOTE: the PostSRSd maintainer acknowledges "theoretically, this error should never occur ... I'm not sure if there's a reliable way to trigger th

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-35525 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • postsrsd→ fixed in1.10-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y postsrsd

Debian bookworm

Source: Debian Security Tracker

  • postsrsd→ fixed in1.10-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y postsrsd

Debian trixie

Source: Debian Security Tracker

  • postsrsd→ fixed in1.10-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y postsrsd
Are YOU affected by CVE-2021-35525?

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
Continuous monitoring beats manual checking

CVE-2021-35525dropped 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. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)