Published: 07/02/2017 Updated: 17/01/2023

CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9

CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8

VMScore: 642

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

The aio_mount function in fs/aio.c in the Linux kernel prior to 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.

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linux linux kernel
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Several security issues were fixed in the Linux kernel ...

The aio_mount function in fs/aioc in the Linux kernel does not properly restrict execute access, which makes it easier for local users to bypass intended SELinux W^X policy restrictions ...

CWE-264 https://github.com/torvalds/linux/commit/22f6b4d34fcf039c63a94e7670e0da24f8575a5a http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.7 http://source.android.com/security/bulletin/2017-02-01.html http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=22f6b4d34fcf039c63a94e7670e0da24f8575a5a http://www.securityfocus.com/bid/96122 http://www.securitytracker.com/id/1037798 https://nvd.nist.gov https://usn.ubuntu.com/3422-2/

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