CVE-2014-9491: The devzvol_readdir function in illumos does not check the return value of a strchr call, which allows remo...

Security readout for executives and security teams

A flaw in illumos devzvol directory reading can crash a system if triggered through unspecified remote vectors. This is an availability risk: affected storage hosts or services may go offline. The supplied sources do not show data theft, code execution, or confirmed real-world exploitation. Exposure is most relevant to systems based on illumos, especially deployments using ZFS volume device handling. The CVE record does not enumerate affected distributions, versions, or CPEs, so teams must verify vendor lineage and patch status directly. Treat this as an availability-risk cleanup item for illumos-based infrastructure. It is not proven actively exploited in the supplied evidence, but a remotely triggerable panic can still disrupt business services if exposed systems remain unpatched. Mitigation focus: Check illumos and distribution advisories for fixes tied to issue 5421.; Apply vendor updates containing or backporting commit d65686849024838243515b5c40ae2c479460b4b5.; Prioritize externally reachable or multi-tenant illumos-derived systems..

Prepared

Jun 14, 2026, 05:41 UTC (UTC+00:00)

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