CVE-2022-0168 : LINUX KERNEL COMMON INTERNET FILE SYSTEM FS/CIFS/SMB2OPS.C SMB2_IOCTL_QUERY_INFO NULL POINTER DEREFERENCE

Description

A denial of service (DOS) issue was found in the Linux kernel’s smb2_ioctl_query_info function in the fs/cifs/smb2ops.c Common Internet File System (CIFS) due to an incorrect return from the memdup_user function. This flaw allows a local, privileged (CAP_SYS_ADMIN) attacker to crash the system.

References

https://access.redhat.com/security/cve/CVE-2022-0168

https://bugzilla.redhat.com/show_bug.cgi?id=2037386

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d6f5e358452479fa8a773b5c6ccc9e4ec5a20880

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