A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:42922 | Issue Tracking |
| https://access.redhat.com/errata/RHSA-2026:55855 | Vendor Advisory |
| https://access.redhat.com/security/cve/CVE-2026-59842 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2498168 | Issue Tracking Vendor Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
22 Sep 2026, 19:47
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://access.redhat.com/errata/RHSA-2026:42922 - Issue Tracking | |
| References | () https://access.redhat.com/errata/RHSA-2026:55855 - Vendor Advisory | |
| CPE | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:10.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.2:*:*:*:*:*:arm64:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:10.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_els:10.2:*:*:*:*:*:x64:* cpe:2.3:o:redhat:enterprise_linux_for_eus:10.2:*:*:*:*:*:x64:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:10.2:*:*:*:*:*:*:* cpe:2.3:a:libssh:libssh:0.12.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_els:10.2:*:*:*:*:*:arm64:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:x64:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:10.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.2:*:*:*:*:*:x64:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_els:10.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:10.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:arm64:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_els:10.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:10.2:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_eus:10.2:*:*:*:*:*:arm64:* |
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| First Time |
Redhat enterprise Linux For Els
Redhat enterprise Linux For Eus Redhat enterprise Linux For Ibm Z Systems Eus Redhat enterprise Linux For Ibm Z Systems Els Redhat enterprise Linux For Power Little Endian Eus Redhat enterprise Linux For Power Little Endian Els Redhat enterprise Linux For Power Little Endian Redhat enterprise Linux For Ibm Z Systems |
Information
Published : 2026-07-21 12:18
Updated : 2026-09-22 19:47
NVD link : CVE-2026-59842
Mitre link : CVE-2026-59842
CVE.ORG link : CVE-2026-59842
JSON object : View
Products Affected
redhat
- enterprise_linux_for_ibm_z_systems
- enterprise_linux_for_power_little_endian_eus
- enterprise_linux_for_power_little_endian_els
- enterprise_linux_for_ibm_z_systems_els
- hardened_images
- enterprise_linux_for_eus
- enterprise_linux
- enterprise_linux_for_ibm_z_systems_eus
- enterprise_linux_for_els
- enterprise_linux_for_power_little_endian
libssh
- libssh
CWE
CWE-125
Out-of-bounds Read