CVE-2026-74486
Description
A flaw was found in the Linux kernel's binfmt_misc component. This vulnerability arises from an inconsistency in how write access is managed for cloned interpreter files. When a pre-content watch is applied to an interpreter after its registration, subsequent executions through that entry can lead to an imbalance in write access denials and allowances. This can cause the interpreter file to become permanently unwritable, resulting in a Denial of Service (DoS) where the interpreter cannot be executed.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
An adversary that can cause a resource counter to become inaccurate may be able to create situations where resources are not accounted for and not released, thus causing resources to become scarce for future needs.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An adversary that can cause a resource counter to become inaccurate may be able to force an error that causes the product to crash or exit out of its current operation.
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