USN-5130-1

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USN-5130-1

Summary: linux vulnerabilities

Details: Jann Horn discovered a race condition in the tty subsystem of the Linux kernel in the locking for the TIOCSPGRP ioctl(), leading to a use-after- free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-29661) Jann Horn discovered that the tty subsystem of the Linux kernel did not use consistent locking in some situations, leading to a read-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2020-29660)

References: https://ubuntu.com/security/notices/USN-5130-1, https://ubuntu.com/security/CVE-2020-29660, https://ubuntu.com/security/CVE-2020-29661