CVE-2021-47476
comedi: ni_usb6501: fix NULL-deref in command paths
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
comedi: ni_usb6501: fix NULL-deref in command paths
The driver uses endpoint-sized USB transfer buffers but had no sanity
checks on the sizes. This can lead to zero-size-pointer dereferences or
overflowed transfer buffers in ni6501_port_command() and
ni6501_counter_command() if a (malicious) device has smaller max-packet
sizes than expected (or when doing descriptor fuzz testing).
Add the missing sanity checks to probe().
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: comedi: ni_usb6501: corrige NULL-deref en las rutas de comando El controlador usa búferes de transferencia USB del tamaño de un terminal, pero no tuvo controles de cordura en los tamaños. Esto puede provocar desreferencias de puntero de tamaño cero o búferes de transferencia desbordados en ni6501_port_command() y ni6501_counter_command() si un dispositivo (malicioso) tiene tamaños máximos de paquetes más pequeños de lo esperado (o cuando se realizan pruebas de descriptor difuso). Agregue las comprobaciones de cordura que faltan a probe().
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-22 CVE Reserved
- 2024-05-22 CVE Published
- 2024-05-23 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/a03bb00e50ab4c07107da58a52a0bff7943f360c | 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" | >= 3.18 < 4.4.292 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 4.4.292" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 4.9.290 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 4.9.290" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 4.14.255 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 4.14.255" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 4.19.217 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 4.19.217" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 5.4.159 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 5.4.159" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 5.10.79 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 5.10.79" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 5.14.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 5.14.18" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 5.15.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 5.15.2" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 5.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 5.16" | en |
Affected
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