CVE-2018-7757

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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

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

Details

Source: MITRE

Published: 2018-03-08

Updated: 2019-10-03

Type: CWE-772

Risk Information

CVSS v2

Base Score: 2.1

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

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.15.7 (inclusive)

Tenable Plugins

View all (36 total)

IDNameProductFamilySeverity
124985EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1532)NessusHuawei Local Security Checks
high
124834EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1512)NessusHuawei Local Security Checks
high
122414EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-1062)NessusHuawei Local Security Checks
high
121837Photon OS 1.0: Linux PHSA-2018-1.0-0132NessusPhotonOS Local Security Checks
high
121208SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0095-1)NessusSuSE Local Security Checks
high
119187Scientific Linux Security Update : kernel on SL7.x x86_64 (20181030)NessusScientific Linux Local Security Checks
high
119010OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0273)NessusOracleVM Local Security Checks
high
118990CentOS 7 : kernel (CESA-2018:3083)NessusCentOS Local Security Checks
high
118852Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4269)NessusOracle Linux Local Security Checks
medium
118851Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4268)NessusOracle Linux Local Security Checks
critical
118814Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4265)NessusOracle Linux Local Security Checks
high
118770Oracle Linux 7 : kernel (ELSA-2018-3083)NessusOracle Linux Local Security Checks
high
118528RHEL 7 : kernel-rt (RHSA-2018:3096)NessusRed Hat Local Security Checks
high
118525RHEL 7 : kernel (RHSA-2018:3083)NessusRed Hat Local Security Checks
high
118513RHEL 7 : kernel-alt (RHSA-2018:2948) (Spectre)NessusRed Hat Local Security Checks
high
118194openSUSE Security Update : the Linux Kernel (openSUSE-2018-1184)NessusSuSE Local Security Checks
high
118034SUSE SLES12 Security Update : kernel (SUSE-SU-2018:3084-1)NessusSuSE Local Security Checks
high
117933SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:3003-1)NessusSuSE Local Security Checks
high
117569EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1260)NessusHuawei Local Security Checks
medium
111934Photon OS 1.0: Linux / Rsync PHSA-2018-1.0-0132 (deprecated)NessusPhotonOS Local Security Checks
high
110900Ubuntu 14.04 LTS : linux vulnerabilities (USN-3698-1)NessusUbuntu Local Security Checks
high
110899Ubuntu 16.04 LTS : linux-oem vulnerabilities (USN-3697-2)NessusUbuntu Local Security Checks
high
110898Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3697-1)NessusUbuntu Local Security Checks
high
110694Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2018-041)NessusVirtuozzo Local Security Checks
high
110051Ubuntu 16.04 LTS : Linux kernel (Raspberry Pi 2, Snapdragon) vulnerabilities (USN-3656-1)NessusUbuntu Local Security Checks
high
110049Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3654-2) (Spectre)NessusUbuntu Local Security Checks
high
110048Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3654-1) (Spectre)NessusUbuntu Local Security Checks
high
109758SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1221-1)NessusSuSE Local Security Checks
high
109757SUSE SLES12 Security Update : kernel (SUSE-SU-2018:1220-1)NessusSuSE Local Security Checks
high
109646SUSE SLES11 Security Update : kernel (SUSE-SU-2018:1172-1)NessusSuSE Local Security Checks
high
109531Debian DLA-1369-1 : linux security update (Spectre)NessusDebian Local Security Checks
critical
109518Debian DSA-4188-1 : linux - security update (Spectre)NessusDebian Local Security Checks
high
109517Debian DSA-4187-1 : linux - security update (Spectre)NessusDebian Local Security Checks
critical
109483EulerOS 2.0 SP1 : kernel (EulerOS-SA-2018-1085)NessusHuawei Local Security Checks
medium
109360SUSE SLES11 Security Update : kernel (SUSE-SU-2018:1080-1) (Spectre)NessusSuSE Local Security Checks
high
108307Fedora 27 : kernel (2018-2bce10900e)NessusFedora Local Security Checks
critical