CVE-2021-4156
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 1.8%
exploitation probability
1.8%top 23% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
n/a · libsndfileReferences
https://bugzilla.redhat.com/show_bug.cgi?id=2027690https://github.com/libsndfile/libsndfile/issues/731https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beabhttps://lists.debian.org/debian-lts-announce/2022/06/msg00020.htmlhttps://lists.debian.org/debian-lts-announce/2022/09/msg00036.htmlhttps://lists.debian.org/debian-lts-announce/2025/12/msg00013.htmlhttps://security.gentoo.org/glsa/202309-11