CVE-2009-4835 · cross-distro fix matrix

CVE-2009-4835: The (1) htk_read_header, (2) alaw_init, (3) ulaw_init, (4) pcm_init, (5) float32_init, and (6) sds_read_header functions in libsndfile 1.0.20 allow context-dependent attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted audio file.

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

Fix per ecosystem

Each block below is a distro release where CVE-2009-4835 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libsndfile→ fixed in1.0.21-3urgency: unimportant

sudo apt-get install --only-upgrade -y libsndfile

Debian bookworm

Source: Debian Security Tracker

libsndfile→ fixed in1.0.21-3urgency: unimportant

sudo apt-get install --only-upgrade -y libsndfile

Debian trixie

Source: Debian Security Tracker

libsndfile→ fixed in1.0.21-3urgency: unimportant

sudo apt-get install --only-upgrade -y libsndfile

Are YOU affected by CVE-2009-4835?

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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