Description

The aio_mount function in fs/aio.c in the Linux kernel before 4.7.7 does not properly restrict execute access, which makes it easier for local users to bypass intended SELinux W^X policy restrictions, and consequently gain privileges, via an io_setup system call.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=22f6b4d34fcf039c63a94e7670e0da24f8575a5a

http://source.android.com/security/bulletin/2017-02-01.html

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.7

http://www.securityfocus.com/bid/96122

http://www.securitytracker.com/id/1037798

https://github.com/torvalds/linux/commit/22f6b4d34fcf039c63a94e7670e0da24f8575a5a

Details

Risk Information

CVSS v2

CVSS v3