CVE-2017-7742 — In libsndfile before 1

In libsndfile before 1.0.28, an error in the "flac_buffer_copy()" function (flac.c) can be exploited to cause a segmentation violation (with read memory access) via a specially crafted FLAC file during a resample attempt, a similar issue to CVE-2017-7585.

01What is this vulnerability?

In libsndfile before 1.0.28, an error in the "flac_buffer_copy()" function (flac.c) can be exploited to cause a segmentation violation (with read memory access) via a specially crafted FLAC file during a resample attempt, a similar issue to CVE-2017-7585.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2017-04-12T18:59:00.190
• Last modified: 2026-05-13T00:24:29.033

09References

• blogs.gentoo.org — https://blogs.gentoo.org/ago/2017/04/11/libsndfile-invalid-memory-read-and-inval…
• github.com — https://github.com/erikd/libsndfile/commit/60b234301adf258786d8b90be5c1d437fc879…
• security.gentoo.org — https://security.gentoo.org/glsa/201707-04
• blogs.gentoo.org — https://blogs.gentoo.org/ago/2017/04/11/libsndfile-invalid-memory-read-and-inval…
• github.com — https://github.com/erikd/libsndfile/commit/60b234301adf258786d8b90be5c1d437fc879…
• security.gentoo.org — https://security.gentoo.org/glsa/201707-04