| Name | CVE-2021-4156 |
| Description | An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3058-1, DLA-3126-1, ELA-629-1 |
| Debian Bugs | 1014713 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libsndfile (PTS) | jessie, jessie (lts) | 1.0.25-9.1+deb8u7 | fixed |
| stretch (security), stretch (lts), stretch | 1.0.27-3+deb9u3 | fixed | |
| buster (security), buster, buster (lts) | 1.0.28-6+deb10u2 | fixed | |
| bullseye | 1.0.31-2 | vulnerable | |
| bookworm | 1.2.0-1 | fixed | |
| sid, trixie | 1.2.2-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libsndfile | source | jessie | 1.0.25-9.1+deb8u7 | ELA-629-1 | ||
| libsndfile | source | stretch | 1.0.27-3+deb9u3 | DLA-3058-1 | ||
| libsndfile | source | buster | 1.0.28-6+deb10u2 | DLA-3126-1 | ||
| libsndfile | source | (unstable) | 1.1.0-1 | 1014713 |
[bullseye] - libsndfile <no-dsa> (Minor issue)
https://github.com/libsndfile/libsndfile/issues/731
https://github.com/libsndfile/libsndfile/commit/ced91d7b971be6173b604154c39279ce90ad87cc (1.1.0beta1)