A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesnt exist and may lead to possible signing failures or heap corruption.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libssh | Ubuntu | esm-infra/bionic | * |
| Libssh | Ubuntu | esm-infra/focal | * |
| Libssh | Ubuntu | esm-infra/xenial | * |
| Libssh | Ubuntu | jammy | * |
| Libssh | Ubuntu | noble | * |
| Libssh | Ubuntu | oracular | * |
| Libssh | Ubuntu | plucky | * |
| Libssh | Ubuntu | upstream | * |