// For flags

CVE-2021-47137

net: lantiq: fix memory corruption in RX ring

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved:

net: lantiq: fix memory corruption in RX ring

In a situation where memory allocation or dma mapping fails, an
invalid address is programmed into the descriptor. This can lead
to memory corruption. If the memory allocation fails, DMA should
reuse the previous skb and mapping and drop the packet. This patch
also increments rx drop counter.

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net: lantiq: corrige la corrupción de la memoria en el anillo RX En una situación en la que falla la asignación de memoria o el mapeo dma, se programa una dirección no válida en el descriptor. Esto puede provocar daños en la memoria. Si la asignación de memoria falla, DMA debería reutilizar el skb y el mapeo anteriores y descartar el paquete. Este parche también incrementa el contador de caídas de rx.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-03-04 CVE Reserved
  • 2024-03-25 CVE Published
  • 2024-03-26 EPSS Updated
  • 2024-12-19 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
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"
 >= 4.20 < 5.4.124
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.124"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.20 < 5.10.42
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.10.42"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.20 < 5.12.9
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.12.9"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 4.20 < 5.13
Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.13"
en
Affected