An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel. An attacker with a local account can trick the stack unwinder code to leak stack contents to userspace. The fix allows only root to inspect the kernel stack of an arbitrary task.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | kernel | 2018-11-05 19:47 | ALAS-2018-1100 |
Amazon Linux 2 - Core | kernel | 2018-11-07 21:58 | ALAS2-2018-1100 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 3.3 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
NVD | CVSSv2 | 4.9 | AV:L/AC:L/Au:N/C:C/I:N/A:N |
NVD | CVSSv3 | 5.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |