Description
libmikmod through 3.3.15 contains a heap out-of-bounds read vulnerability in the IMF_Load() loader that allows attackers to read beyond allocated memory by supplying a crafted IMF module. Attackers can enable the linear-period header flag and map notes to out-of-range samples, causing noteindex indexing far past the heap allocation and crashing applications that load the file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| sezero | libmikmod | ≤ 3.3.15 | — |
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 | libmikmod | 3.3.16-1 | — |
| Debian 13 | libmikmod | No fix yet | — |
| Debian 12 | libmikmod | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libmikmod | No fix yet | — |
| Ubuntu 26.04 LTS | libmikmod | No fix yet | — |
| Ubuntu 24.04 LTS | libmikmod | No fix yet | — |
| Ubuntu 22.04 LTS | libmikmod | No fix yet | — |
| Ubuntu 20.04 LTS | libmikmod | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libmikmod | No fix yet | — |
| Ubuntu 16.04 LTS | libmikmod | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libmikmod | 3.3.16-1.1 | openSUSE-SU-2026:12331-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libmikmod | No fix yet | — |
Advisories 1
- openSUSE-SU-2026:12331-1 libmikmod-devel-3.3.16-1.1 on GA media SUSE / openSUSE Security Updates · Oct 29, 2026
References
- https://hackmd.io/@haind-pwn/libmikmod-mtm-imf-loader-oob-read technical-description
- https://github.com/sezero/mikmod/blob/6e658155f7e6b394a288dac796ba572634553fad/libmikmod/loaders/load_imf.c#L702-L712 technical-description
- https://github.com/sezero/mikmod product
- VulnCheck Advisory: libmikmod through 3.3.15 Heap Out-of-Bounds Read via IMF_Load third-party-advisory