// For flags

CVE-2021-47168

NFS: fix an incorrect limit in filelayout_decode_layout()

Severity Score

5.5
*CVSS v3

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: NFS: fix an incorrect limit in filelayout_decode_layout() The "sizeof(struct nfs_fh)" is two bytes too large and could lead to
memory corruption. It should be NFS_MAXFHSIZE because that's the size
of the ->data[] buffer. I reversed the size of the arguments to put the variable on the left.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFS: corrige un límite incorrecto en filelayout_decode_layout() El "sizeof(struct nfs_fh)" es dos bytes demasiado grande y podría provocar daños en la memoria. Debería ser NFS_MAXFHSIZE porque ese es el tamaño del búfer ->datos[]. Invertí el tamaño de los argumentos para poner la variable a la izquierda.

In the Linux kernel, the following vulnerability has been resolved: NFS: fix an incorrect limit in filelayout_decode_layout() The "sizeof(struct nfs_fh)" is two bytes too large and could lead to memory corruption. It should be NFS_MAXFHSIZE because that's the size of the ->data[] buffer. I reversed the size of the arguments to put the variable on the left.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-03-25 CVE Reserved
  • 2024-03-25 CVE Published
  • 2024-12-19 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
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"
 >= 2.6.37 < 4.4.271
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 4.4.271"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 4.9.271
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 4.9.271"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 4.14.235
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 4.14.235"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 4.19.193
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 4.19.193"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 5.4.124
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 5.4.124"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 5.10.42
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 5.10.42"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 5.12.9
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 5.12.9"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.37 < 5.13
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.37 < 5.13"
en
Affected