CVE-2021-4156
- State
- Published
- Severity
- Not scored
- Published
- Mar 23, 2022
- Updated
- Dec 11, 2025
- Reserved
- Dec 22, 2021
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.
Scores
The record has no CVSS score.
Weaknesses
Affected Products
| Product | Versions |
|---|---|
libsndfilen/a |
|
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2027690
- https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab
- https://github.com/libsndfile/libsndfile/issues/731
- [debian-lts-announce] 20220628 [SECURITY] [DLA 3058-1] libsndfile security updatemailing-list
- [debian-lts-announce] 20220929 [SECURITY] [DLA 3126-1] libsndfile security updatemailing-list
- GLSA-202309-11vendor-advisory
- https://lists.debian.org/debian-lts-announce/2025/12/msg00013.html
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