SecuriTricks - CVE-2025-5351

Description

A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.

Product(s) Impacted

Vendor	Product	Versions
Libssh	Libssh	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-415

Double Free

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	libssh	libssh	/	/	/	/	/	/	/	/

References

https://access.redhat.com/security/cve/CVE-2025-5351

https://bugzilla.redhat.com/show_bug.cgi?id=2369367

CVSS Score

4.2 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: HIGH
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: NONE

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

View Vector String

Timeline

Published: July 4, 2025, 9:15 a.m.
Last Modified: July 4, 2025, 9:15 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

secalert@redhat.com

CVE-2025-5351