CVE-2018-20836

high
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

An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html

http://www.securityfocus.com/bid/108196

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae

https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae

https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html

https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html

https://seclists.org/bugtraq/2019/Aug/13

https://seclists.org/bugtraq/2019/Aug/18

https://security.netapp.com/advisory/ntap-20190719-0003/

https://support.f5.com/csp/article/K11225249

https://usn.ubuntu.com/4076-1/

https://www.debian.org/security/2019/dsa-4495

https://www.debian.org/security/2019/dsa-4497

Details

Source: MITRE

Published: 2019-05-07

Updated: 2019-05-08

Type: CWE-362

Risk Information

CVSS v2

Base Score: 9.3

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

Impact Score: 10

Exploitability Score: 8.6

Severity: HIGH

CVSS v3

Base Score: 8.1

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

Impact Score: 5.9

Exploitability Score: 2.2

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Tenable Plugins

View all (36 total)

IDNameProductFamilySeverity
150512SUSE SLES11 Security Update : kernel (SUSE-SU-2019:14127-1)NessusSuSE Local Security Checks
high
144754RHEL 7 : kernel (RHSA-2021:0019)NessusRed Hat Local Security Checks
high
144554RHEL 7 : kernel (RHSA-2020:5656)NessusRed Hat Local Security Checks
high
141727Scientific Linux Security Update : kernel on SL7.x x86_64 (20201001)NessusScientific Linux Local Security Checks
high
141619CentOS 7 : kernel (CESA-2020:4060)NessusCentOS Local Security Checks
high
141057RHEL 7 : kernel (RHSA-2020:4060)NessusRed Hat Local Security Checks
high
141026RHEL 7 : kernel-rt (RHSA-2020:4062)NessusRed Hat Local Security Checks
high
136166SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1142-1)NessusSuSE Local Security Checks
high
136025SUSE SLES12 Security Update : kernel (SUSE-SU-2020:1118-1)NessusSuSE Local Security Checks
high
134387EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1186)NessusHuawei Local Security Checks
critical
132499NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0266)NessusNewStart CGSL Local Security Checks
high
132490NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0264)NessusNewStart CGSL Local Security Checks
high
129284SUSE SLED15 / SLES15 Security Update : kernel-source-rt (SUSE-SU-2019:2430-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (SACK Panic) (SACK Slowness) (Spectre)NessusSuSE Local Security Checks
high
127921Debian DLA-1885-1 : linux-4.9 security updateNessusDebian Local Security Checks
high
127867Debian DSA-4497-1 : linux - security updateNessusDebian Local Security Checks
high
127866Debian DLA-1884-1 : linux security updateNessusDebian Local Security Checks
high
127491Debian DSA-4495-1 : linux - security updateNessusDebian Local Security Checks
high
127097Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4076-1)NessusUbuntu Local Security Checks
high
126897openSUSE Security Update : the Linux Kernel (openSUSE-2019-1757)NessusSuSE Local Security Checks
high
126884openSUSE Security Update : the Linux Kernel (openSUSE-2019-1716)NessusSuSE Local Security Checks
high
126811SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1870-1) (SACK Slowness)NessusSuSE Local Security Checks
high
126744SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:1855-1) (SACK Slowness)NessusSuSE Local Security Checks
high
126743SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:1854-1)NessusSuSE Local Security Checks
high
126742SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1852-1)NessusSuSE Local Security Checks
high
126741SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2019:1851-1) (SACK Slowness)NessusSuSE Local Security Checks
high
126691SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:1829-1)NessusSuSE Local Security Checks
high
126688SUSE SLES12 Security Update : kernel (SUSE-SU-2019:1823-1)NessusSuSE Local Security Checks
high
126299EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-1672)NessusHuawei Local Security Checks
high
126266EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-1639)NessusHuawei Local Security Checks
high
126121Photon OS 1.0: Linux PHSA-2019-1.0-0236NessusPhotonOS Local Security Checks
high
126031Slackware 14.2 / current : kernel (SSA:2019-169-01) (SACK Panic) (SACK Slowness)NessusSlackware Local Security Checks
high
125964Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2019-4685)NessusOracle Linux Local Security Checks
high
125755Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4670)NessusOracle Linux Local Security Checks
high
125754OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0024)NessusOracleVM Local Security Checks
high
125587EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2019-1635)NessusHuawei Local Security Checks
high
125564EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1612)NessusHuawei Local Security Checks
high