CVE-2022-49058

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49058
In the Linux kernel, the following vulnerability has been resolved: cifs: potential buffer overflow in handling symlinks Smatch printed a warning: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() 'dctx->buf' too small (16 vs u32max) It's caused because Smatch marks 'link_len' as untrusted since it comes from sscanf(). Add a check to ensure that 'link_len' is not larger than the size of the 'link_str' buffer.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1316c28569a80ab3596eeab05bf5e01991e7e739 Patch
https://git.kernel.org/stable/c/22d658c6c5affed10c8907e67160cef0b6c92186 Patch
https://git.kernel.org/stable/c/3e582749e742e662a8e9bb37cffac62dccaaa1e2 Patch
https://git.kernel.org/stable/c/4e166a41180be2f1e66bbb6d46448e80a9a5ec05 Patch
https://git.kernel.org/stable/c/515e7ba11ef043d6febe69389949c8ef5f25e9d0 Patch
https://git.kernel.org/stable/c/64c4a37ac04eeb43c42d272f6e6c8c12bfcf4304 Patch
https://git.kernel.org/stable/c/9901b07ba42b39266b34a888e48d7306fd707bee Patch
https://git.kernel.org/stable/c/eb5f51756944735ac70cd8bb38637cc202e29c91 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*
History

18 Mar 2025, 19:08

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
CPE cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: desbordamiento de búfer potencial al manejar enlaces simbólicos Smatch imprimió una advertencia: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() 'dctx->buf' demasiado pequeño (16 vs u32max) Esto se debe a que Smatch marca 'link_len' como no confiable ya que proviene de sscanf(). Agregue una verificación para asegurarse de que 'link_len' no sea más grande que el tamaño del búfer 'link_str'.
References () https://git.kernel.org/stable/c/1316c28569a80ab3596eeab05bf5e01991e7e739 - () https://git.kernel.org/stable/c/1316c28569a80ab3596eeab05bf5e01991e7e739 - Patch
References () https://git.kernel.org/stable/c/22d658c6c5affed10c8907e67160cef0b6c92186 - () https://git.kernel.org/stable/c/22d658c6c5affed10c8907e67160cef0b6c92186 - Patch
References () https://git.kernel.org/stable/c/3e582749e742e662a8e9bb37cffac62dccaaa1e2 - () https://git.kernel.org/stable/c/3e582749e742e662a8e9bb37cffac62dccaaa1e2 - Patch
References () https://git.kernel.org/stable/c/4e166a41180be2f1e66bbb6d46448e80a9a5ec05 - () https://git.kernel.org/stable/c/4e166a41180be2f1e66bbb6d46448e80a9a5ec05 - Patch
References () https://git.kernel.org/stable/c/515e7ba11ef043d6febe69389949c8ef5f25e9d0 - () https://git.kernel.org/stable/c/515e7ba11ef043d6febe69389949c8ef5f25e9d0 - Patch
References () https://git.kernel.org/stable/c/64c4a37ac04eeb43c42d272f6e6c8c12bfcf4304 - () https://git.kernel.org/stable/c/64c4a37ac04eeb43c42d272f6e6c8c12bfcf4304 - Patch
References () https://git.kernel.org/stable/c/9901b07ba42b39266b34a888e48d7306fd707bee - () https://git.kernel.org/stable/c/9901b07ba42b39266b34a888e48d7306fd707bee - Patch
References () https://git.kernel.org/stable/c/eb5f51756944735ac70cd8bb38637cc202e29c91 - () https://git.kernel.org/stable/c/eb5f51756944735ac70cd8bb38637cc202e29c91 - Patch
First Time Linux linux Kernel
Linux
CWE CWE-120

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-03-18 19:08

NVD link : CVE-2022-49058

Mitre link : CVE-2022-49058

CVE.ORG link : CVE-2022-49058

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')