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CVE-2011-1781

13
FAUCET Score

CVE-2011-1781 describes a denial-of-service vulnerability in SystemTap 1.4, specifically when unprivileged mode (stapusr) is enabled. A local attacker can trigger a divide-by-zero error and system crash (OOPS) by providing a specially crafted ELF program with malformed DWARF expressions to a stap script performing stack unwinding. This vulnerability has a low severity CVSS score of 1.2, indicating a low impact (partial availability) with high attack complexity, and requires local access. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.4CPE matchmatch criteria
cpe:2.3:a:systemtap:systemtap:1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.2LOW

AV:L/AC:H/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
1.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 22nd percentile among its peer group of 747 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: systemtap-0:1.4-6.el6_1.1
View patch

Vendor Advisories (1)

redhatCVE-2011-1781Moderate

systemtap: divide by zero stack unwinding flaw

May 11, 2011

References

openwall.com / lists/oss-security/2011/05/20/2
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/44802
sourceware.org / git
rhn.redhat.com / errata/RHSA-2011-0842.html
mandriva.com / security/advisories
securityfocus.com / bid/47934