Description
A vulnerability was detected in libyal libvmdk. Affected by this vulnerability is the function libvmdk_descriptor_file_read_header of the file libvmdk/libvmdk_descriptor_file.c of the component Descriptor File Parser. The manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit is now public and may be used. The patch is identified as 175d3fc0a0b961f362f16e7560a6169d7213e16b. It is best practice to apply a patch to resolve this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| libyal | libvmdk | — | — |
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 | libvmdk | No fix yet | — |
| Debian 13 | libvmdk | No fix yet | — |
| Debian 12 | libvmdk | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libvmdk | No fix yet | — |
| Ubuntu 26.04 LTS | libvmdk | No fix yet | — |
| Ubuntu 24.04 LTS | libvmdk | No fix yet | — |
| Ubuntu 22.04 LTS | libvmdk | No fix yet | — |
| Ubuntu 20.04 LTS | libvmdk | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libvmdk | No fix yet | — |
| Ubuntu 16.04 LTS | libvmdk | No fix yet | — |
References
- VDB-431575 | libyal libvmdk Descriptor File libvmdk_descriptor_file.c libvmdk_descriptor_file_read_header out-of-bounds vdb-entry technical-description
- VDB-431575 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-123269 | CVE Analysis and Report third-party-advisory
- Submit #1032842 | libyal (Joachim Metz) libvmdk 396e1873a030ac535bf919f6707d5be57613ae08` Memory corruption third-party-advisory
- https://github.com/libyal/libvmdk/issues/41 issue-tracking
- https://github.com/user-attachments/files/33394231/03_integer_underflow_poc.zip exploit
- https://github.com/libyal/libvmdk/commit/175d3fc0a0b961f362f16e7560a6169d7213e16b patch
- https://github.com/libyal/libvmdk/ product