CVE-2009-0028

Published: 27 February 2009

The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary signals to a parent process from an unprivileged child process by launching an additional child process with the CLONE_PARENT flag, and then letting this new process exit.

From the Ubuntu Security Team

In certain situations, cloned processes were able to send signals to parent processes, crossing privilege boundaries. A local attacker could send arbitrary signals to parent processes, leading to a denial of service.

Status

References

• https://ubuntu.com/security/notices/USN-751-1
• https://ubuntu.com/security/notices/USN-752-1
• https://www.cve.org/CVERecord?id=CVE-2009-0028
• NVD
• Launchpad
• Debian