Description
A memory leak was discovered in matio 1.5.21 and earlier in Mat_VarReadNextInfo5() in mat5.c via a crafted file. This issue can potentially result in DoS.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | matio | matio 1.5.22, matio 1.5.23 | — |
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 | 1.5.22-1 | — |
| Debian 13 | libmatio | 1.5.22-1 | — |
| Debian 12 | libmatio | 1.5.22-1 | — |
| Debian 11 | libmatio | 1.5.19-2+deb11u1 | DLA-4459-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | libmatio | 1.5.21-1ubuntu0.1~esm1 | USN-6829-1 |
| Ubuntu Pro 20.04 LTS | libmatio | 1.5.17-3ubuntu0.1~esm2 | USN-6829-1 |
| Ubuntu Pro 18.04 LTS | libmatio | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | libmatio | No fix yet | — |
| Ubuntu Pro 14.04 LTS | libmatio | No fix yet | — |
Advisories 2
- USN-6829-1 libmatio vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-4459-1 libmatio - security update Debian Security (DSA / DLA) · Jan 29, 2026