Description
Mat_VarReadNextInfo4 in mat4.c in MATIO 1.5.17 omits a certain '\0' character, leading to a heap-based buffer over-read in strdup_vprintf when uninitialized memory is accessed.
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 | libmatio | 1.5.17-4 | — |
| Debian 13 | libmatio | 1.5.17-4 | — |
| Debian 12 | libmatio | 1.5.17-4 | — |
| Debian 8 | libmatio | 1.5.2-3+deb8u1 | DLA-2267-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libpdl-io-matlab-perl | No fix yet | — |
| Ubuntu 26.04 LTS | libpdl-io-matlab-perl | No fix yet | — |
| Ubuntu 25.10 | libpdl-io-matlab-perl | No fix yet | — |
| Ubuntu 24.04 LTS | libpdl-io-matlab-perl | No fix yet | — |
| Ubuntu 22.04 LTS | libpdl-io-matlab-perl | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mldemos +1 | No fix yet | — |
| Ubuntu 18.04 LTS | libpdl-io-matlab-perl | No fix yet | — |
| Ubuntu 16.04 LTS | mldemos +1 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | libmatio | 1.5.17-3ubuntu0.1~esm1 | USN-5185-1 |
| Ubuntu Pro 18.04 LTS | libmatio | 1.5.11-1ubuntu0.1~esm1 | USN-5185-1 |
| Ubuntu Pro 16.04 LTS | libmatio | 1.5.3-1ubuntu0.1~esm1 | USN-5185-1 |
| Ubuntu Pro 14.04 LTS | libmatio | 1.5.2-1ubuntu1+esm1 | USN-5185-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | matio | 1.5.21-1.2 | openSUSE-SU-2024:11040-1 |
Advisories 3
- USN-5185-1 libmatio vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- DLA-2267-1 libmatio - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11040-1 libmatio-devel-1.5.21-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026