systemtap: divide by zero stack unwinding flaw
Published Aug 29, 2011
1.2
LOWCVSS 2.0
EPSS 0.30%
Description
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).
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
systemtap-0:1.4-6.el6_1.1
Fixed · RHSA-2011:0842
Red Hat Enterprise Linux 4
systemtap
Not affected
Red Hat Enterprise Linux 5
systemtap
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | systemtap-0:1.4-6.el6_1.1 | Fixed | RHSA-2011:0842 |
| Red Hat Enterprise Linux 4 | systemtap | Not affected | n/a |
| Red Hat Enterprise Linux 5 | systemtap | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.30% (0.00301) | 20.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.30% (0.00301) | 21.47th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00064) | 17.23th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.03% (0.01034) | 41.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (11)
- http://openwall.com/lists/oss-security/2011/05/20/2 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/44802 third-party-advisoryx_refsource_SECUNIA
- http://sourceware.org/git/?p=systemtap.git%3Ba=commit%3Bh=fa2e3415185a28542d419a641ecd6cddd52e3cd9 x_refsource_CONFIRM
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:155 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/47934 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2011-1781 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=702687 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=703972 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-1781
- https://rhn.redhat.com/errata/RHSA-2011-0842.html vendor-advisoryx_refsource_REDHAT
- https://www.cve.org/CVERecord?id=CVE-2011-1781
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2011/05/20/2 | mailing-listx_refsource_MLIST | |
| http://secunia.com/advisories/44802 | third-party-advisoryx_refsource_SECUNIA | |
| http://sourceware.org/git/?p=systemtap.git%3Ba=commit%3Bh=fa2e3415185a28542d419a641ecd6cddd52e3cd9 | x_refsource_CONFIRM | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2011:155 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.securityfocus.com/bid/47934 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2011-1781 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=702687 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=703972 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1781 | ||
| https://rhn.redhat.com/errata/RHSA-2011-0842.html | vendor-advisoryx_refsource_REDHAT | |
| https://www.cve.org/CVERecord?id=CVE-2011-1781 |
Change history (0)
No recorded changes yet.