CVE-2017-5546

HIGH

Description

The freelist-randomization feature in mm/slab.c in the Linux kernel 4.8.x and 4.9.x before 4.9.5 allows local users to cause a denial of service (duplicate freelist entries and system crash) or possibly have unspecified other impact in opportunistic circumstances by leveraging the selection of a large value for a random number.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c4e490cf148e85ead0d1b1c2caaba833f1d5b29f

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5

http://www.openwall.com/lists/oss-security/2017/01/21/3

http://www.securityfocus.com/bid/95711

https://bugzilla.redhat.com/show_bug.cgi?id=1415733

https://github.com/torvalds/linux/commit/c4e490cf148e85ead0d1b1c2caaba833f1d5b29f

Details

Source: MITRE

Published: 2017-02-06

Updated: 2019-10-03

Risk Information

CVSS v2.0

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH