Stack-based Buffer Overflow Affecting rrdtool-tcl package, versions <0:1.7.0-17.el8_10


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-ROCKY8-RRDTOOLTCL-17817517
  • published5 Jul 2026
  • disclosed1 Jun 2026

Introduced: 1 Jun 2026

CVE-2026-43958  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 rrdtool-tcl to version 0:1.7.0-17.el8_10 or higher.
This issue was patched in RLSA-2026:34155.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rrdtool-tcl package and not the rrdtool-tcl package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in rrdcached, a component of rrdtool. A local attacker with access to a rrdcached socket can exploit a stack-based buffer overflow by sending an oversized CREATE request. This vulnerability can lead to a denial of service by crashing the daemon or potentially allow for arbitrary code execution, impacting the integrity and confidentiality of data.

CVSS Base Scores

version 3.1