The ntty_ioctl_tiocgicount function in drivers/char/nozomi.c in the Linux kernel 2.6.36.1 and earlier does not properly initialize a certain
Noroxi assessment
Priority: Monitor (action score 7/100)
- Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 1% (FIRST EPSS); higher than 63% of all records.
- Fixed version: kernel (Red Hat:enterprise_linux:6::client) 0:2.6.32-71.14.1.el6; kernel-debug (Red Hat:enterprise_linux:6::client) 0:2.6.32-71.14.1.el6; kernel-debug-debuginfo (Red Hat:enterprise_linux:6::client) 0:2.6.32-71.14.1.el6.
Low priority for now. Upgrade to kernel (Red Hat:enterprise_linux:6::client) 0:2.6.32-71.14.1.el6; kernel-debug (Red Hat:enterprise_linux:6::client) 0:2.6.32-71.14.1.el6; kernel-debug-debuginfo (Red Hat:enterprise_linux:6::client) 0:2.6.32-71.14.1.el6 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
The ntty_ioctl_tiocgicount function in drivers/char/nozomi.c in the Linux kernel 2.6.36.1 and earlier does not properly initialize a certain structure member, which allows local users to obtain potentially sensitive information from kernel stack memory via a TIOCGICOUNT ioctl call.
- Published
- Nov 29, 2010
- Updated
- Jun 16, 2026
- EPSS
- 1.0% · 63th percentile
- CWE
- CWE-200
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 · 1.0%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernelup to 2.6.36.1 inclusive
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:6::client | kernel | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-debuginfo | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-devel | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-i686 | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-x86_64 | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-devel | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-doc | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-firmware | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-headers | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::client | perf | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::server | kernel-bootwrapper | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::server | kernel-debuginfo-common-ppc64 | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::server | kernel-debuginfo-common-s390x | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::server | kernel-kdump | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::server | kernel-kdump-debuginfo | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_linux:6::server | kernel-kdump-devel | before 0:2.6.32-71.14.1.el6 | 0:2.6.32-71.14.1.el6 |
| Red Hat:enterprise_mrg:1::el5 | kernel-rt | before 0:2.6.33.7-rt29.47.el5rt | 0:2.6.33.7-rt29.47.el5rt |
| Red Hat:enterprise_mrg:1::el5 | kernel-rt-debug | before 0:2.6.33.7-rt29.47.el5rt | 0:2.6.33.7-rt29.47.el5rt |
| Red Hat:enterprise_mrg:1::el5 | kernel-rt-debug-debuginfo | before 0:2.6.33.7-rt29.47.el5rt | 0:2.6.33.7-rt29.47.el5rt |
| Red Hat:enterprise_mrg:1::el5 | kernel-rt-debug-devel | before 0:2.6.33.7-rt29.47.el5rt | 0:2.6.33.7-rt29.47.el5rt |
| Red Hat:enterprise_mrg:1::el5 | kernel-rt-debuginfo | before 0:2.6.33.7-rt29.47.el5rt | 0:2.6.33.7-rt29.47.el5rt |
| Red Hat:enterprise_mrg:1::el5 | kernel-rt-debuginfo-common | before 0:2.6.33.7-rt29.47.el5rt | 0:2.6.33.7-rt29.47.el5rt |
+10
Same product
linux: all recordsOther highest-scoring records for the same primary product.
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
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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-rt | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debug | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debug-debuginfo | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debug-devel | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debuginfo | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-debuginfo-common | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-devel | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-doc | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-trace | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-trace-debuginfo | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-trace-devel | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
| red hat:kernel-rt-vanilla | 0:2.6.33.7-rt29.47.el5rt · Red Hat:enterprise_mrg:1::el5 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2011-03-14 |
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.
- Published
- First PoC+104 d
- TodayOct 13, 2026+5797 d
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
- P · data can be read
- Integrity
- none
- Availability
- none
- Attack complexity
- M
- Confidentiality impact
- P
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-200 · Exposure of Sensitive Information to an Unauthorized ActorCVSS vector
AV:L/AC:M/Au:N/C:P/I:N/A:N
nvd-primary
Root cause
The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.
The bug in code
The whole CWE-200 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
{ "permissions": ["tabs", "<all_urls>"], "background": { "service_worker": "analytics.js" }}Fixed
{ "permissions": ["activeTab"], "host_permissions": ["https://yildiz.example/*"]}Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- ExcavationCAPEC-116likelihood: High · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- FootprintingCAPEC-169likelihood: High · Very Low
- Exploiting Trust in ClientCAPEC-22likelihood: High · High
- FingerprintingCAPEC-224likelihood: High · Very Low
- ICMP Echo Request PingCAPEC-285likelihood: Medium · Low
- TCP SYN ScanCAPEC-287Low
- Enumerate Mail Exchange (MX) RecordsCAPEC-290Low
ATT&CK techniques
- System Service DiscoveryT1007
- System Network Configuration DiscoveryT1016
- Remote System DiscoveryT1018
- System Owner/User DiscoveryT1033
- Masquerading: Match Legitimate Name or LocationT1036.005
- Network Service ScanningT1046
- System Network Connections DiscoveryT1049
- Process DiscoveryT1057
- Permission Groups DiscoveryT1069
- System Information DiscoveryT1082
- File and Directory DiscoveryT1083
- Account DiscoveryT1087
- Multi-Factor Authentication InterceptionT1111
- Peripheral Device DiscoveryT1120
- System Time DiscoveryT1124
- Access Token Manipulation:Token Impersonation/TheftT1134.001
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (10 more)Show less
- git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d281da7ff6f70efca0553c288bb883e8605b3862
- lkml.indiana.edu/hypermail//linux/kernel/1009.1/03387.html
- www.openwall.com/lists/oss-security/2010/09/25/2
- www.openwall.com/lists/oss-security/2010/10/06/6
- www.openwall.com/lists/oss-security/2010/10/07/1
- www.openwall.com/lists/oss-security/2010/10/25/3
- www.redhat.com/support/errata/RHSA-2010-0958.html
- www.redhat.com/support/errata/RHSA-2011-0007.html
- www.securityfocus.com/bid/45059
- bugzilla.redhat.com/show_bug.cgi?id=648663
Vendor advisories and official records. Exploit/PoC links are deliberately left out.