In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsThere is no fixed version for Centos:8
kernel-selftests-internal
.
Note: Versions mentioned in the description apply only to the upstream kernel-selftests-internal
package and not the kernel-selftests-internal
package as distributed by Centos
.
See How to fix?
for Centos:8
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
exec: fix the racy usage of fs_struct->in_exec
check_unsafe_exec() sets fs->in_exec under cred_guard_mutex, then execve() paths clear fs->in_exec lockless. This is fine if exec succeeds, but if it fails we have the following race:
T1 sets fs->in_exec = 1, fails, drops cred_guard_mutex
T2 sets fs->in_exec = 1
T1 clears fs->in_exec
T2 continues with fs->in_exec == 0
Change fs/exec.c to clear fs->in_exec with cred_guard_mutex held.