Total vulnerabilities in the database
A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 5.6.5 |
| redhat / enterprise_linux | 7.0 | 7.0.x |
| redhat / enterprise_linux | 6.0 | 6.0.x |
| redhat / enterprise_linux | 5.0 | 5.0.x |
| redhat / enterprise_linux | 8.0 | 8.0.x |
| canonical / ubuntu_linux | 20.04 | 20.04.x |
| redhat / enterprise_mrg | 2.0 | 2.0.x |