CVE-2022-49743

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49743
In the Linux kernel, the following vulnerability has been resolved: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/012cdef22000f3104e4fa8224ad29fde509b8caf
https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1 Patch
https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c Patch
https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

19 Jan 2026, 13:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/012cdef22000f3104e4fa8224ad29fde509b8caf -

30 Oct 2025, 15:27

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1 - () https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1 - Patch
References () https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c - () https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c - Patch
References () https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63 - () https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE NVD-CWE-noinfo
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ovl: Usar la matriz flexible "buf" para el destino de memcpy() La matriz flexible "buf" debe ser el destino de memcpy() para evitar una advertencia de tiempo de ejecución de falsos positivos del reciente endurecimiento de FORTIFY_SOURCE: memcpy: se detectó una escritura que abarca el campo (tamaño 93) de un solo campo "&fh->fb" en fs/overlayfs/export.c:799 (tamaño 21)

27 Mar 2025, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-03-27 17:15

Updated : 2026-01-19 13:16

NVD link : CVE-2022-49743

Mitre link : CVE-2022-49743

CVE.ORG link : CVE-2022-49743

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo