SB2012062201 - Input validation error in Linux kernel

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2011-1079)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to gain access to sensitive information or perform a denial of service (DoS) attack.

The bnep_sock_ioctl function in net/bluetooth/bnep/sock.c in the Linux kernel before 2.6.39 does not ensure that a certain device field ends with a '�' character, which allows local users to obtain potentially sensitive information from kernel stack memory, or cause a denial of service (BUG and system crash), via a BNEPCONNADD command.

Remediation

Install update from vendor's website.

References

• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.118
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.175
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.42
• https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.180
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2