Race condition in Linux 2.6, when threads are sharing memory mapping via CLONE_VM (such as linuxthreads and vfork), might allow local users to cause a denial of service (deadlock) by triggering a core dump while waiting for a thread that has just performed an exec.

References

• https://nvd.nist.gov/vuln/detail/CVE-2005-3106
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9108
• http://linux.bkbits.net:8080/linux-2.6/diffs/fs/exec.c@1.156?nav=index.html|src/|src/fs|hist/fs/exec.c
• http://secunia.com/advisories/17141
• http://secunia.com/advisories/18056
• http://secunia.com/advisories/18510
• http://www.debian.org/security/2005/dsa-922
• http://www.mandriva.com/security/advisories?name=MDKSA-2006:072
• http://www.redhat.com/support/errata/RHSA-2006-0101.html
• http://www.securityfocus.com/archive/1/427980/100/0/threaded
• http://www.securityfocus.com/bid/15049
• http://www.ubuntu.com/usn/usn-199-1
• http://linux.bkbits.net:8080/linux-2.6/diffs/fs/exec.c%401.156?nav=index.html%7Csrc/%7Csrc/fs%7Chist/fs/exec.c