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OPENSUSE-SU-2026:21379-1

Vulnerability from csaf_opensuse - Published: 2026-07-18 19:25 - Updated: 2026-09-17 17:39
Summary
Security update for ctop
Severity
Important
Notes
Title of the patch: Security update for ctop
Description of the patch: This update for ctop fixes the following issues: Changes in ctop embedded dependencies: - CVE-2022-21698: client_golang: Denial of service using InstrumentHandlerCounter (bsc#1248710) - CVE-2024-45310: runc: runc can be tricked into creating empty files (bsc#1257431) - CVE-2026-10722: ebpf: Crash when parsing malformed ELF/BTF input (bsc#1267805) - CVE-2026-33814: net: Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265800) - CVE-2026-39821: net: Failure to reject ASCII-only Punycode-encoded labels (bsc#1266632)
Patchnames: openSUSE-Leap-16.0-packagehub-430
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Leap 16.0:ctop-0:0.7.7-bp160.2.1.aarch64
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:ctop-0:0.7.7-bp160.2.1.ppc64le
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:ctop-0:0.7.7-bp160.2.1.s390x
Vendor Fix
Unresolved product id: openSUSE Leap 16.0:ctop-0:0.7.7-bp160.2.1.x86_64
Vendor Fix
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2022-21698
Threats
Impact low
Affected products
Recommended 4 products, the same list as for CVE-2022-21698
Threats
Impact moderate
Affected products
Recommended 4 products, the same list as for CVE-2022-21698
Threats
Impact important
Affected products
Recommended 4 products, the same list as for CVE-2022-21698
Threats
Impact important

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          "text": "client_golang is the instrumentation library for Go applications in Prometheus, and the promhttp package in client_golang provides tooling around HTTP servers and clients. In client_golang prior to version 1.11.1, HTTP server is susceptible to a Denial of Service through unbounded cardinality, and potential memory exhaustion, when handling requests with non-standard HTTP methods. In order to be affected, an instrumented software must use any of `promhttp.InstrumentHandler*` middleware except `RequestsInFlight`; not filter any specific methods (e.g GET) before middleware; pass metric with `method` label name to our middleware; and not have any firewall/LB/proxy that filters away requests with unknown `method`. client_golang version 1.11.1 contains a patch for this issue. Several workarounds are available, including removing the `method` label name from counter/gauge used in the InstrumentHandler; turning off affected promhttp handlers; adding custom middleware before promhttp handler that will sanitize the request method given by Go http.Request; and using a reverse proxy or web application firewall, configured to only allow a limited set of methods.",
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        {
          "category": "general",
          "text": "When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.",
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          "url": "https://bugzilla.suse.com/1264506"
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          "category": "external",
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          "text": "The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode(\"xn--example-.com\") incorrectly returns the name \"example.com\" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject \"example.com\" but permit \"xn--example-.com\". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name \"example.com\".",
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    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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