CVE-2023-6606

Se encontró una vulnerabilidad de lectura fuera de los límites en smbCalcSize en fs/smb/client/netmisc.c en el kernel de Linux. Este problema podría permitir que un atacante local bloquee el sistema o filtre información interna del kernel.

It was discovered that the CIFS network file system implementation in the Linux kernel did not properly validate the server frame size in certain situation, leading to an out-of-bounds read vulnerability. An attacker could use this to construct a malicious CIFS image that, when operated on, could cause a denial of service or possibly expose sensitive information. Budimir Markovic, Lucas De Marchi, and Pengfei Xu discovered that the perf subsystem in the Linux kernel did not properly validate all event sizes when attaching new events, leading to an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.