CVE-2021-47401
ipack: ipoctal: fix stack information leak
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
ipack: ipoctal: fix stack information leak
The tty driver name is used also after registering the driver and must
specifically not be allocated on the stack to avoid leaking information
to user space (or triggering an oops).
Drivers should not try to encode topology information in the tty device
name but this one snuck in through staging without anyone noticing and
another driver has since copied this malpractice.
Fixing the ABI is a separate issue, but this at least plugs the security
hole.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipack: ipoctal: corrige la fuga de información de la pila. El nombre del controlador tty también se usa después de registrar el controlador y específicamente no debe asignarse en la pila para evitar filtrar información al espacio del usuario (o activar un ups). Los controladores no deberían intentar codificar información de topología en el nombre del dispositivo tty, pero este se coló durante la preparación sin que nadie se diera cuenta y desde entonces otro controlador copió esta mala práctica. Arreglar la ABI es un tema aparte, pero esto al menos tapa el agujero de seguridad.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-21 CVE Reserved
- 2024-05-21 CVE Published
- 2024-05-22 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (9)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/ba4dc61fe8c545a5d6a68b63616776556b771f51 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 4.4.286 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 4.4.286" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 4.9.285 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 4.9.285" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 4.14.249 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 4.14.249" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 4.19.209 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 4.19.209" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 5.4.151 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 5.4.151" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 5.10.71 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 5.10.71" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 5.14.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 5.14.10" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.5 < 5.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.5 < 5.15" | en |
Affected
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