CVE-2025-4878

Published: Jul 22, 2025Modified: Jun 30, 2026Deferred

3.6

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitability: 1.0 / Impact: 2.5

Source: secalert@redhat.com (Secondary)

Description

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 doesn't exist and may lead to possible signing failures or heap corruption.

Related CWEs

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (6)

https://access.redhat.com/errata/RHSA-2026:18683

Source: secalert@redhat.com

https://access.redhat.com/security/cve/CVE-2025-4878

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2376184

Source: secalert@redhat.com

https://git.libssh.org/projects/libssh.git/commit/?id=697650caa97eaf7623924c75f9fcfec6dd423cd1

Source: secalert@redhat.com

https://git.libssh.org/projects/libssh.git/commit/?id=b35ee876adc92a208d47194772e99f9c71e0bedb

Source: secalert@redhat.com

https://www.libssh.org/security/advisories/CVE-2025-4878.txt

Source: secalert@redhat.com

Timeline

No history available yet.