Linux Kernel do_hidp_sock_ioctl Function Local Information Disclosure Vulnerability [CVE-2019-11884]

CVE Number – CVE-2019-11884

A vulnerability in the Linux Kernel could allow a local attacker to access sensitive information on a targeted system. The vulnerability exists in the do_hidp_sock_ioctl function, as defined in the net/bluetooth/hidp/sock.c source code file of the affected software. An attacker could exploit this vulnerability by accessing the system and running the HIDPCONNADD command on the targeted system. A successful exploit could allow the attacker to access sensitive information on the targeted system. Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. has confirmed the vulnerability and software updates are available.


  • To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.


  • Administrators are advised to apply the appropriate updates.Administrators are advised to allow only trusted users to have network access.Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.Administrators can help protect affected systems from external attacks by using a solid firewall strategy.Administrators are advised to monitor affected systems.

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Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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