Description
libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Gegl | libbabl | 0.1.62 | — |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | babl | No fix yet | — |
| Ubuntu 26.04 LTS | babl | No fix yet | — |
| Ubuntu 25.10 | babl | No fix yet | — |
| Ubuntu 24.04 LTS | babl | No fix yet | — |
| Ubuntu 22.04 LTS | babl | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | babl | No fix yet | — |
| Ubuntu 18.04 LTS | babl | No fix yet | — |
| Ubuntu 16.04 LTS | babl | No fix yet | — |
References
- ExploitDB-49259 exploit
- Official Product Homepage product
- Product Reference product
- VulnCheck Advisory: libbabl 0.1.62 Broken Double Free Detection Memory Safety third-party-advisory