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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2022-47939)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-47939 advisory.

  - 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. (CVE-2022-47939)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 20.04 LTS / 22.04 LTS host is running a ksmbd server that is affected by multiple vulnerabilities:

  - An unauthenticated remote code execution vulnerability in the ksmbd component of the Linux kernel.
    (CVE-2022-47939)

  - An authenticated remote code execution vulnerability in the ksmbd component of the Linux kernel.
    (CVE-2022-47942)

  - An unauthenticated remote denial of service vulnerability in the ksmbd component of the Linux     kernel. (CVE-2022-47941)

  - Authenticated denial of service vulnerabilities in the ksmbd component of the Linux kernel.
    (CVE-2022-47938, CVE-2022-47940)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
244684	Linux Distros Unpatched Vulnerability : CVE-2022-47939	Nessus	Misc.	critical
172740	CBL Mariner 2.0 Security Update: kernel (CVE-2022-47939)	Nessus	MarinerOS Local Security Checks	critical
169894	Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel kmsbd multiple vulnerabilities	Nessus	Ubuntu Local Security Checks	critical

Detections

Analytics

CVE-2022-47939

critical

Tenable Plugins

critical

critical

critical