CVE-2010-2653: Race condition in the hvc_close function in drivers/char/hvc_console.c in the Linux kernel before 2.6.34 al...

Security readout for executives and security teams

This is an old Linux kernel race condition in the Hypervisor Virtual Console driver. A local user could trigger a crash or denial of service by closing an hvc device at the wrong time. The sources mention possible unspecified other impact, but do not define it. Most relevant to virtualized Linux systems running kernels earlier than 2.6.34 with Hypervisor Virtual Console support enabled. Exposure requires a local user who can access or close an hvc device. Modern supported distributions are likely patched, but legacy appliances and old virtualization images need checking. Treat this as a legacy-platform hygiene issue unless an affected system is multi-user or business-critical. Prioritize remediation for old virtual infrastructure, appliances, or hosted environments where untrusted local users exist. Mitigation focus: Upgrade to a vendor-supported kernel containing the hvc_console race fix.; Confirm whether vendor backports include commit 320718ee074acce5ffced6506cb51af1388942aa.; Retire or isolate legacy Linux images that cannot receive kernel updates..

Prepared

Jun 28, 2026, 01:40 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.