CVE-2026-53941 (GCVE-0-2026-53941)
Vulnerability from cvelistv5
Published
2026-09-15 17:02
Modified
2026-09-16 15:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
Inspektor Gadget is a set of tools and framework for data collection and system inspection on Kubernetes clusters and Linux hosts using eBPF. From 0.27.0 until 0.53.1, the uprobe library resolver can allow an unprivileged container to consume excessive CPU and block other containers from starting by supplying a crafted /etc/ld.so.cache file while an uprobe-based gadget is active. The parser in pkg/uprobetracer/ldcache_parser.go trusts EntryCount enough to perform excessive iteration, computes cache1Len with overflowing uint32 arithmetic, and repeatedly calls readStringFromBytes in pkg/uprobetracer/bytes.go, where byte-by-byte immutable string concatenation produces quadratic work. While this processing occurs, pkg/container-hook holds the fanotify container-start pause, allowing a crafted cache to delay startup for roughly a minute, prevent Docker from starting other containers, and degrade monitoring. Processing caches from already-running containers can still consume CPU but does not hold the new-container startup pause, and the advisory establishes no confidentiality or integrity impact. This issue is fixed in version 0.53.1.
References
| URL | Tags | |
|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| inspektor-gadget | inspektor-gadget |
Version: >= 0.27.0, < 0.53.1 |
{
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"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-53941",
"options": [
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{
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},
{
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}
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"role": "CISA Coordinator",
"timestamp": "2026-09-16T15:08:49.947843Z",
"version": "2.0.3"
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}
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"attackRequirements": "NONE",
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"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
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"tags": [
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{
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{
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"url": "https://github.com/inspektor-gadget/inspektor-gadget/releases/tag/v0.53.1"
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"source": {
"advisory": "GHSA-vjhx-2cqw-3q6q",
"discovery": "UNKNOWN"
},
"title": "Inspektor Gadget Uprobe gadgets: unprivileged container\u0027s ld.so.cache causes high CPU utilization and container startup DoS"
}
},
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"dateReserved": "2026-06-11T15:46:12.318Z",
"dateUpdated": "2026-09-16T15:09:02.083Z",
"state": "PUBLISHED"
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"vulnerability-lookup:meta": {
"vulnrichment": {
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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