CVE-2018-7757

MEDIUM

Linux Kernel < 4.15.7 - Denial of Service via SAS Phy Event File Reads

Title source: llm
STIX 2.1

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.

References (16)

Core 16
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3083
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4187
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3654-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3697-1/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4188
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:2948
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3697-2/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/103348
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3654-2/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3698-1/
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3656-1/
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3096
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3698-2/

Scores

CVSS v3 5.5
EPSS 0.0056
EPSS Percentile 41.9%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-772
Status published
Products (1)
linux/linux_kernel < 4.15.7
Published Mar 08, 2018
Tracked Since Feb 18, 2026