The ExecShield feature in a certain Red Hat patch for the Linux kernel in Red Hat Enterprise Linux (RHEL) 5 and 6 and Fedora 15 and 16 does
The ExecShield feature in a certain Red Hat patch for the Linux kernel in Red Hat Enterprise Linux (RHEL) 5 and 6 and Fedora 15 and 16 does not properly handle use of many shared libraries by a 32-bit executable file, which makes it easier for context-dependent attackers to bypass the ASLR protection mechanism by leveraging a predictable base address for one of these libraries.
- Published
- Mar 1, 2013
- Updated
- Jun 16, 2026
- EPSS
- 0.4% · 27th percentile
- CWE
- —
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Report tools
Action score
7
Monitor
Low priority for now.
- CVSS
- 7 / 40 · 1.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| redhat | enterprise linux | cpe:2.3:o:redhat:enterprise_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- fedoraproject fedora15
- fedoraproject fedora16
- redhat enterprise linux5
- redhat enterprise linux6.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Red Hat:enterprise_linux:5::server | kernel | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-debug | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-debug-debuginfo | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-debug-devel | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-debuginfo | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-debuginfo-common | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-devel | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-doc | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-headers | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-kdump | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-kdump-debuginfo | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-kdump-devel | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-PAE | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-PAE-debuginfo | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-PAE-devel | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-xen | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-xen-debuginfo | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:5::server | kernel-xen-devel | before 0:2.6.18-348.1.1.el5 | 0:2.6.18-348.1.1.el5 |
| Red Hat:enterprise_linux:6::client | kernel | before 0:2.6.32-279.14.1.el6 | 0:2.6.32-279.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug | before 0:2.6.32-279.14.1.el6 | 0:2.6.32-279.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-debuginfo | before 0:2.6.32-279.14.1.el6 | 0:2.6.32-279.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-devel | before 0:2.6.32-279.14.1.el6 | 0:2.6.32-279.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo | before 0:2.6.32-279.14.1.el6 | 0:2.6.32-279.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-i686 | before 0:2.6.32-279.14.1.el6 | 0:2.6.32-279.14.1.el6 |
+15
Same product
fedoraproject: all recordsOther highest-scoring records for the same primary product.
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- CVE-2016-7167Multiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl 43Plan
- CVE-2016-2173org.springframework.core.serializer.DefaultDeserializer in Spring AMQP before 1.5.5 allows remote attackers to execute arbitrary code.41Plan
- CVE-2015-0278libuv before 0.10.34 does not properly drop group privileges, which allows context-dependent attackers to gain privileges via unspecified ve41Plan
- CVE-2015-3145The sanitize_cookie_path function in cURL and libcurl 7.31.0 through 7.41.0 does not properly calculate an index, which allows remote attack41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| red hat:kernel | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debug | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-i686 | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-x86_64 | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-devel | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-doc | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-firmware | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:kernel-headers | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:perf | 0:2.6.32-279.14.1.el6 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- none
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- None
Weakness class (CWE)
—
CVSS vector
AV:L/AC:M/Au:N/C:N/I:P/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- openwall.com/lists/oss-security/2012/03/21/3
- scarybeastsecurity.blogspot.com/2012/03/some-random-observations-on-linux-aslr.html
- www.openwall.com/lists/oss-security/2012/03/20/4
- bugzilla.redhat.com/show_bug.cgi?id=804947
- oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=302a4fc15aebf202b6dffd6c804377c6058ee6e4
Vendor advisories and official records. Exploit/PoC links are deliberately left out.