Cpe:2.3:a:gnome:gnome-Remote-Desktop:*:*:*:*:*:*:*:* - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/cpes/cpe2.3agnomegnome-remote-desktop/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioTue, 13 Oct 2026 12:35:21 +0000https://feed.craftedsignal.io/favicon-32x32.pngCraftedSignal Threat Feedhttps://feed.craftedsignal.io/3232https://feed.craftedsignal.io/favicon.svgDenial of Service in gnome-remote-desktop via VNC TLS I/O Loophttps://feed.craftedsignal.io/briefs/2026-10-gnome-remote-desktop-dos/Tue, 13 Oct 2026 12:35:21 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-10-gnome-remote-desktop-dos/A vulnerability in gnome-remote-desktop on Red Hat Enterprise Linux allows a remote attacker to trigger an infinite loop in VNC TLS I/O handlers, leading to high CPU consumption and service denial.A vulnerability (CVE-2026-109832) exists in the gnome-remote-desktop package as shipped in Red Hat Enterprise Linux (RHEL). The flaw stems from improper handling of specific GnuTLS return codes (GNUTLS_E_AGAIN and GNUTLS_E_INTERRUPTED) within the VNC TLS I/O handlers. Instead of yielding control back to the event loop, the application enters an unbounded busy loop. A remote attacker capable of connecting to an enabled VNC TLS listener can trigger this condition, causing the event-loop thread to pin at 100% CPU usage. This prevents the application from making forward progress, effectively resulting in a denial-of-service condition for the remote desktop session.

Impact

The vulnerability results in a denial-of-service, preventing legitimate users from accessing or maintaining remote desktop sessions via the affected gnome-remote-desktop service. Targeted systems running RHEL with remote VNC access enabled are at risk of resource exhaustion on the event-loop thread, potentially impacting system stability depending on the configuration and threading model of the service.

Recommendation

Prioritized actions for security and IT teams include:

  • Monitor system logs for repeated or unexplained high CPU usage originating from the gnome-remote-desktop process.
  • Identify all RHEL systems with gnome-remote-desktop enabled and VNC listeners exposed to the network.
  • Patch CVE-2026-109832 by applying the security updates provided by Red Hat once available.
  • Restrict access to VNC TLS listeners to trusted network segments to mitigate the risk of remote triggering by unauthorized actors.
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