CVE-2018-7757 Information

Description

Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.

CVSS Vector

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

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 http://www.securityfocus.com/bid/103348 https://access.redhat.com/errata/RHSA-2018:2948 https://access.redhat.com/errata/RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3096 https://github.com/torvalds/linux/commit/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4 https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html https://usn.ubuntu.com/3654-1/ https://usn.ubuntu.com/3654-2/ https://usn.ubuntu.com/3656-1/ https://usn.ubuntu.com/3697-1/ https://usn.ubuntu.com/3697-2/ https://usn.ubuntu.com/3698-1/ https://usn.ubuntu.com/3698-2/ https://www.debian.org/security/2018/dsa-4187 https://www.debian.org/security/2018/dsa-4188

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5