Yama
E724151
Yama is a Linux Security Module that enhances process and ptrace-related security by restricting how processes can inspect or interfere with each other.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Yama canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8285430 — 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: Yama Context triple: [Linux Security Modules API, usedBy, Yama]
-
A.
Yama
Yama is the Hindu god of death and justice, traditionally regarded as the ruler of the afterlife and judge of the souls of the dead.
-
B.
Yamate
Yamate is a historic hillside district in Yokohama known for its Western-style residences, foreign settlers’ heritage, and scenic views over the city and harbor.
-
C.
Sonamura
Sonamura is a town in the Indian state of Tripura, known as an administrative and commercial center near the India–Bangladesh border.
-
D.
Yamadera
Yamadera is a historic mountainside temple complex in Japan’s Tohoku region, famed for its scenic cliffside halls and panoramic valley views.
-
E.
Yahata
Yahata was a former city in Fukuoka Prefecture, Japan, that became part of the larger city of Kitakyushu through municipal merger.
- 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: Yama Target entity description: Yama is a Linux Security Module that enhances process and ptrace-related security by restricting how processes can inspect or interfere with each other.
-
A.
Yama
Yama is the Hindu god of death and justice, traditionally regarded as the ruler of the afterlife and judge of the souls of the dead.
-
B.
Yamate
Yamate is a historic hillside district in Yokohama known for its Western-style residences, foreign settlers’ heritage, and scenic views over the city and harbor.
-
C.
Sonamura
Sonamura is a town in the Indian state of Tripura, known as an administrative and commercial center near the India–Bangladesh border.
-
D.
Yamadera
Yamadera is a historic mountainside temple complex in Japan’s Tohoku region, famed for its scenic cliffside halls and panoramic valley views.
-
E.
Yahata
Yahata was a former city in Fukuoka Prefecture, Japan, that became part of the larger city of Kitakyushu through municipal merger.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Linux Security Module
ⓘ
kernel security feature ⓘ |
| aimsTo |
limit information disclosure between processes
ⓘ
mitigate privilege escalation attacks ⓘ reduce attack surface from ptrace ⓘ |
| canBe |
built as kernel module
ⓘ
built into kernel ⓘ |
| category |
computer security software
ⓘ
operating system security ⓘ |
| configurationInterface |
/proc/sys/kernel/yama
ⓘ
sysctl ⓘ |
| controls |
how processes can inspect each other
ⓘ
how processes can interfere with each other ⓘ ptrace access between processes ⓘ |
| defaultPolicy | allow ptrace with traditional restrictions when scope is 0 ⓘ |
| designedTo | be simple and low-overhead ⓘ |
| hasKernelConfigOption | CONFIG_SECURITY_YAMA ⓘ |
| implementedIn | Linux kernel ⓘ |
| integratesWith |
Linux Security Modules framework
ⓘ
linked to:
Linux Security Modules API
|
| introducedFor | hardening Linux distributions ⓘ |
| license | GNU General Public License ⓘ |
| operatingSystem | Linux ⓘ |
| policy |
no attach; only children may be traced when scope is 3
ⓘ
restrict ptrace to admin-only attach when scope is 2 ⓘ restrict ptrace to parent processes when scope is 1 ⓘ |
| primaryFunction |
enhance process-related security
ⓘ
enhance ptrace-related security ⓘ |
| provides |
additional restrictions on ptrace
ⓘ
defense in depth for process isolation ⓘ |
| ptraceScopeValue |
0
ⓘ
1 ⓘ 2 ⓘ 3 ⓘ |
| relatedTo |
AppArmor
ⓘ
SELinux ⓘ Smack ⓘ TOMOYO Linux ⓘ |
| restricts |
cross-uid ptrace in stricter modes
ⓘ
ptrace of non-child processes depending on policy ⓘ |
| scope |
debugging and tracing restrictions
ⓘ
process-level security ⓘ |
| securityModel |
discretionary access control
ⓘ
mandatory access control aspects ⓘ |
| supports |
per-system security policy tuning
ⓘ
ptrace_scope setting ⓘ |
| usedBy | various Linux distributions as default hardening ⓘ |
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: Yama Description of subject: Yama is a Linux Security Module that enhances process and ptrace-related security by restricting how processes can inspect or interfere with each other.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.