StackGuard
E724133
StackGuard is a compiler-based security technology that protects programs from stack-based buffer overflow attacks by inserting canary values to detect and prevent stack corruption.
All labels observed (2)
| Label | Occurrences |
|---|---|
| StackGuard canonical | 1 |
| StackGuard compiler extension | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8285293 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: StackGuard Context triple: [Immunix, developed, StackGuard]
-
A.
AddressSanitizer
AddressSanitizer is a fast memory error detector that instruments programs to find issues like buffer overflows and use-after-free bugs at runtime.
-
B.
Data Guard
Data Guard is Oracle's high-availability and disaster recovery solution that maintains synchronized standby databases to protect against data loss and downtime.
-
C.
MemorySanitizer
MemorySanitizer is an LLVM-based dynamic analysis tool that detects uses of uninitialized memory in programs at runtime.
-
D.
SS guards
SS guards were members of Nazi Germany’s Schutzstaffel who enforced brutal control, violence, and mass murder in concentration and extermination camps during the Holocaust.
-
E.
Address Space Layout Randomization (ASLR)
Address Space Layout Randomization (ASLR) is a security technique that randomly arranges the memory addresses used by key data areas of a process to make it harder for attackers to predict and exploit them.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: StackGuard Target entity description: StackGuard is a compiler-based security technology that protects programs from stack-based buffer overflow attacks by inserting canary values to detect and prevent stack corruption.
-
A.
AddressSanitizer
AddressSanitizer is a fast memory error detector that instruments programs to find issues like buffer overflows and use-after-free bugs at runtime.
-
B.
Data Guard
Data Guard is Oracle's high-availability and disaster recovery solution that maintains synchronized standby databases to protect against data loss and downtime.
-
C.
MemorySanitizer
MemorySanitizer is an LLVM-based dynamic analysis tool that detects uses of uninitialized memory in programs at runtime.
-
D.
SS guards
SS guards were members of Nazi Germany’s Schutzstaffel who enforced brutal control, violence, and mass murder in concentration and extermination camps during the Holocaust.
-
E.
Address Space Layout Randomization (ASLR)
Address Space Layout Randomization (ASLR) is a security technique that randomly arranges the memory addresses used by key data areas of a process to make it harder for attackers to predict and exploit them.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
buffer overflow protection mechanism
ⓘ
compiler-based protection mechanism ⓘ security technology ⓘ |
| aimsTo | increase resilience of legacy code against buffer overflows ⓘ |
| assumes | attacker cannot predict or control canary value ⓘ |
| basedOn | idea of placing a sentinel value before control data on stack ⓘ |
| category |
memory safety mitigation
ⓘ
software exploit mitigation ⓘ |
| checks | canary value before executing function epilogue ⓘ |
| deploymentContext |
network services
ⓘ
operating system components ⓘ systems programming ⓘ |
| designGoal |
backward compatibility with existing C programs
ⓘ
low performance overhead ⓘ |
| detectionMethod | checking integrity of canary value before function return ⓘ |
| failureResponse | abort execution on canary mismatch ⓘ |
| granularity | per-function stack frame protection ⓘ |
| implementationDetail | compiler inserts prologue and epilogue code for canary handling ⓘ |
| implements | stack canary mechanism ⓘ |
| influenced |
GCC stack protector mechanisms
ⓘ
later stack protection features in mainstream compilers ⓘ |
| inserts | canary word between buffer and control data on stack ⓘ |
| limitation |
can be bypassed by some information leaks
ⓘ
does not prevent heap-based buffer overflows ⓘ does not prevent non-control-data attacks on stack ⓘ |
| mitigates | stack smashing attacks ⓘ |
| onCanaryCorruption |
prevents use of corrupted return address
ⓘ
terminates program ⓘ |
| operatesAt | compile time ⓘ |
| primaryGoal |
detection of stack corruption
ⓘ
prevention of stack corruption ⓘ |
| protects |
frame pointer on stack
ⓘ
return address on stack ⓘ |
| protectsAgainst | stack-based buffer overflow attacks ⓘ |
| relatedConcept |
buffer overflow mitigation
ⓘ
stack canaries ⓘ stack smashing ⓘ |
| requires |
compiler support
ⓘ
recompilation of protected programs ⓘ |
| securityModel | integrity checking of stack control data ⓘ |
| securityProperty |
integrity of return control flow
ⓘ
partial mitigation of code injection attacks via stack ⓘ |
| targetsLanguage |
C
ⓘ
C++ ⓘ |
| threatModel | attacker overwriting return address via buffer overflow ⓘ |
| uses | canary values ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: StackGuard Description of subject: StackGuard is a compiler-based security technology that protects programs from stack-based buffer overflow attacks by inserting canary values to detect and prevent stack corruption.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.