SMB: Linux Kernel ksmbd SMB2_TREE_DISCONNECT Handling Use After Free
This signature detects attempts to exploit a known vulnerability against Linux Kernel ksmbd. A successful attack can lead to arbitrary code execution.
Extended Description
An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. fs/ksmbd/smb2pdu.c has a use-after-free and OOPS for SMB2_TREE_DISCONNECT.
Affected Products
Linux linux_kernel
References
CVE: CVE-2022-47939
Short Name
SMB:KSMBD-SMB2-TREE-DISCNT-UAF
Severity
Major
Recommended
True
Recommended Action
Drop
Category
SMB
Keywords
After CVE-2022-47939 Free Handling Kernel Linux SMB2_TREE_DISCONNECT Use ksmbd
Release Date
03/02/2023
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3632
False Positive
Unknown
Vendors
Linux