Description
dr_flac, an audio decoder within the dr_libs toolset, contains an integer overflow vulnerability flaw due to trusting the totalPCMFrameCount field from FLAC metadata before calculating buffer size, allowing an attacker with a specially crafted file to perform DoS against programs using the tool.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mackron | dr_flac | ≤ 0.13.2 | — |
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 | libchdr | 0.0~git20250608.8bba774+dfsg-2 | — |
| Debian 13 | libchdr | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | libchdr | No fix yet | — |
| Ubuntu 25.10 | libchdr | No fix yet | — |
| Ubuntu 24.04 LTS | libchdr | No fix yet | — |