subversion -- remotely triggerable "Assertion failed" DoS vulnerability or read overflow.

Subversion Project reports: Subversion's moddavsvn Apache HTTPD server module will trigger an assertion on some requests made against a revision root. This can lead to a DoS. If assertions are disabled it will trigger a read overflow which may cause a SEGFAULT or equivalent or undefined behavior...

C compilers may silently discard some wraparound checks

Overview Some C compilers optimize away pointer arithmetic overflow tests that depend on undefined behavior without providing a diagnostic a warning. Applications containing these tests may be vulnerable to buffer overflows if compiled with these compilers. Description In the C language, given th...

Cyrus IMAPd -- APPEND command uses undefined programming construct

To support MULTIAPPENDS the cmdappend handler uses the global stage array. This array is one of the things that gets destructed when the fatal function is triggered. When the Cyrus IMAP code adds new entries to this array this is done with the help of the postfix increment operator in combination...

CAN-2004-0814: Linux terminal layer races

Linux 2.6.9 fixes a set of race conditions in the Linux terminal subsystem which are believed to go back to 2.2 kernels if not earlier. The race shows up problematically in two places. Firstly a user can cause crashes and other undefined behaviour by issuing a TIOCSETLD ioctl on a terminal...