CVE-2026-59850

Published: Jul 21, 2026Modified: Sep 1, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.

Affected (5)

Products: Libssh: Libssh · Redhat: Enterprise Linux, Hardened Images

1 product

2 products

Enterprise Linux

Hardened Images

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Libssh Libssh	All versions
Redhat Enterprise Linux	Version 10.0
Redhat Enterprise Linux	Version 8.0
Redhat Enterprise Linux	Version 9.0
Redhat Hardened Images	All versions

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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-2026:42922

Source: secalert@redhat.com

Issue Tracking

https://access.redhat.com/errata/RHSA-2026:55855

Source: secalert@redhat.com

https://access.redhat.com/errata/RHSA-2026:62217

Source: secalert@redhat.com

https://access.redhat.com/errata/RHSA-2026:62218

Source: secalert@redhat.com

https://access.redhat.com/security/cve/CVE-2026-59850

Source: secalert@redhat.com

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2498183

Source: secalert@redhat.com

Issue TrackingVendor Advisory

Timeline

No history available yet.