Description
Multiple integer overflows in Free Lossless Audio Codec (FLAC) libFLAC before 1.2.1, as used in Winamp before 5.5 and other products, allow user-assisted remote attackers to execute arbitrary code via a malformed FLAC file that triggers improper memory allocation, resulting in a heap-based buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | flac | 1.2.1-1 | — |
| Debian 13 | flac | 1.2.1-1 | — |
| Debian 12 | flac | 1.2.1-1 | — |
| Debian 4.0 | flac | 1.1.2-8 | DSA-1469-1 |
| Debian 3.1 | flac | 1.1.1-5sarge1 | DSA-1469-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | flac +1 | 1.1.2-28.el5_0.1 | RHSA-2007:0975 |
| RHEL 4 | flac +2 | 1.1.0-7.el4_5.2 | RHSA-2007:0975 |
Advisories 2
- RHSA-2007:0975 Red Hat Security Advisory: flac security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1469-1 flac Debian Security (DSA / DLA) · Mar 9, 2026
References
- 26042 vdb-entry
- GLSA-200711-15 vendor-advisory
- 27507 third-party-advisory
- 27223 third-party-advisory
- DSA-1469 vendor-advisory
- USN-540-1 vendor-advisory
- 20071011 Multiple Vendor FLAC Library Multiple Integer Overflow Vulnerabilities third-party-advisory
- 27210 third-party-advisory
- 27601 third-party-advisory
- ADV-2007-4061 vdb-entry
- http://bugzilla.redhat.com/show_bug.cgi?id=331991
- 27780 third-party-advisory
- 28548 third-party-advisory
- FEDORA-2007-2596 vendor-advisory
- 27878 third-party-advisory
- http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0243
- 27355 third-party-advisory
- 27628 third-party-advisory
- 27399 third-party-advisory
- flac-media-files-bo(37187) vdb-entry
- MDKSA-2007:214 vendor-advisory
- 1018815 vdb-entry
- https://issues.rpath.com/browse/RPL-1873
- https://bugzilla.redhat.com/show_bug.cgi?id=332571
- ADV-2007-3483 vdb-entry
- RHSA-2007:0975 vendor-advisory
- oval:org.mitre.oval:def:10571 vdb-entry signature
- 27625 third-party-advisory
- SUSE-SR:2007:022 vendor-advisory
- http://flac.sourceforge.net/changelog.html#flac_1_2_1
- ADV-2007-3484 vdb-entry