CVE-2018-7757

MEDIUM

Linux kernel <4.15.7 - DoS

Title source: llm

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)

[Patch, Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4a491b1ab11ca0556d2fda1ff1301e862a2d44c4

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/103348

[Patch, Third Party Advisory] https://github.com/torvalds/linux/commit/4a491b1ab11ca0556d2fda1ff1301e862a2d44c4

View Patch ZIP pw:eip

[Mailing List] https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html

[Vendor Advisory] https://usn.ubuntu.com/3654-1/

[Vendor Advisory] https://usn.ubuntu.com/3654-2/

[Vendor Advisory] https://usn.ubuntu.com/3656-1/

[Vendor Advisory] https://usn.ubuntu.com/3697-1/

[Vendor Advisory] https://usn.ubuntu.com/3697-2/

[Vendor Advisory] https://usn.ubuntu.com/3698-1/

[Vendor Advisory] https://usn.ubuntu.com/3698-2/

[Third Party Advisory] https://www.debian.org/security/2018/dsa-4187

[Third Party Advisory] https://www.debian.org/security/2018/dsa-4188

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:2948

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:3083

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:3096

Scores

CVSS v3 5.5

EPSS 0.0010

EPSS Percentile 27.8%

Attack Vector LOCAL

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

Classification

CWE

CWE-772

Status published

Affected Products (1)

linux/linux_kernel < 4.15.7

Timeline

Published Mar 08, 2018

Tracked Since Feb 18, 2026