CVE-2026-1584: NULL Pointer Dereference in Red Hat Red Hat Enterprise Linux 10
A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and resulting in a remote Denial of Service (DoS) condition.
AI Analysis
Technical Summary
A NULL pointer dereference vulnerability exists in gnutls on Red Hat Enterprise Linux 10, triggered by a malformed ClientHello message containing an invalid PSK binder value during the TLS handshake. This flaw can be exploited remotely without authentication to crash the server, causing a denial of service. The CVSS 3.1 base score is 7.5 (high severity) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. The vendor advisory does not currently specify a patch or remediation status.
Potential Impact
The vulnerability leads to a remote denial of service condition by crashing the affected server. It does not affect confidentiality or integrity of data. No known exploits in the wild have been reported. The impact is limited to availability disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-1584 for current remediation guidance. Until a fix is available, consider mitigating exposure by restricting access to affected services or applying network-level protections to limit untrusted TLS handshake attempts.
CVE-2026-1584: NULL Pointer Dereference in Red Hat Red Hat Enterprise Linux 10
Description
A flaw was found in gnutls. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted ClientHello message with an invalid Pre-Shared Key (PSK) binder value during the TLS handshake. This can lead to a NULL pointer dereference, causing the server to crash and resulting in a remote Denial of Service (DoS) condition.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A NULL pointer dereference vulnerability exists in gnutls on Red Hat Enterprise Linux 10, triggered by a malformed ClientHello message containing an invalid PSK binder value during the TLS handshake. This flaw can be exploited remotely without authentication to crash the server, causing a denial of service. The CVSS 3.1 base score is 7.5 (high severity) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. The vendor advisory does not currently specify a patch or remediation status.
Potential Impact
The vulnerability leads to a remote denial of service condition by crashing the affected server. It does not affect confidentiality or integrity of data. No known exploits in the wild have been reported. The impact is limited to availability disruption.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-1584 for current remediation guidance. Until a fix is available, consider mitigating exposure by restricting access to affected services or applying network-level protections to limit untrusted TLS handshake attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-01-29T02:59:06.727Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-1584","vendor":"Red Hat"}]
Threat ID: 69d7ee091cc7ad14da04a8bf
Added to database: 4/9/2026, 6:20:57 PM
Last enriched: 4/9/2026, 6:35:58 PM
Last updated: 4/10/2026, 8:03:23 AM
Views: 7
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