CVE-2011-1781

SystemTap 1.4, when unprivileged (aka stapusr) mode is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) via a crafted ELF program with DWARF expressions that are not properly handled by a stap script that performs stack unwinding (aka backtracing).

Published: 2011-08-29 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1781 is rated Low Risk (10.9/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.06%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-1781

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.04% 0.06% +0.02%
2 2023-03-07 1.03% 0.04% -0.99%
3 2023-02-13 — 1.03% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1781

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
1.2 2.0 LOW
AV:L/AC:H/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 1.9 2.9 [email protected]

Weakness enumeration for CVE-2011-1781

OS Trackers for CVE-2011-1781

vendor priority summary link
debian not yet assigned CVE-2011-1781 not yet assigned priority: Debian including 1 source packages (systemtap), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-1781
redhat medium — https://access.redhat.com/security/cve/CVE-2011-1781
ubuntu medium CVE-2011-1781 medium priority: Ubuntu including 1 source packages (systemtap), 9 status rows across 9 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, upstream): ignored 5, not-affected 3, released 1. https://ubuntu.com/security/CVE-2011-1781

Affected software / configurations for CVE-2011-1781

Vendor Product Version Raw CPE
systemtap systemtap 1.4 cpe:2.3:a:systemtap:systemtap:1.4:*:*:*:*:*:*:*

References for CVE-2011-1781

cvelogic Threat Intelligence