{"items":[{"id":"NVI-00015110","kind":"vulnerability","title":"Uprobe gadgets: unprivileged container's ld.so.cache causes high CPU utilization and container startup DoS","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vjhx-2cqw-3q6q","CVE-2026-53941"],"plain_summary":"GitHub lists this reviewed advisory for github.com/inspektor-gadget/inspektor-gadget. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-233a7a36f7f5de49cc15a147663e79b5"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-233a7a36f7f5de49cc15a147663e79b5","url":"https://github.com/advisories/GHSA-vjhx-2cqw-3q6q","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vjhx-2cqw-3q6q","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:14:33.912Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-233a7a36f7f5de49cc15a147663e79b5"],"technology":"github.com/inspektor-gadget/inspektor-gadget","known_exclusions":[],"conditions_summary":"## Summary\n\nAn unprivileged container can block all other containers from starting on the\nsame host by placing a crafted `/etc/ld.so.cache` file in its filesystem. When\nInspektor Gadget attaches any uprobe-based gadget, it parses this file in the\ncontainer startup path. A malicious cache causes ~53 seconds of CPU burn,\nduring which Docker cannot start any other container. No special capabilities\nare required.\n\n## Severity\n\nTo be assessed — Availability impact, no confidentiality or integrity impact.\n\n## Affected Versions\n\nAll versions of Inspektor Gadget that support uprobe-based gadgets (trace_malloc, trace_open, trace_ssl, trace_grpc, etc.).\n\n## Description\n\nWhen Inspektor Gadget attaches uprobe-based gadgets to containers, it resolves library paths by parsing the container's `/etc/ld.so.cache` file (`pkg/uprobetracer/ldcache_parser.go`). This file is fully controlled by the container.\n\nThe parser has three vulnerabilities:\n\n1. **Quadratic string building** (`pkg/uprobetracer/bytes.go:36-44`): The `readStringFromBytes` function concatenates one byte at a time (`res += string(data[i])`), which is O(n²) in Go due to string immutability. With a 16MB cache file containing large regio","public_affected_ranges":[">= 0.27.0, < 0.53.1"]}],"null_published_at":"2026-11-03T10:03:26.549Z","source_updated_at":"2026-08-19T19:16:35.000Z","source_disclosed_at":"2026-08-19T19:16:35.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-02T20:14:33.912Z"}],"next_cursor":null,"snapshot_revision":"42594"}