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High severity · published May 7, 2019
CVE-2018-20836
An issue was discovered in the Linux kernel before 4.20
8.1
CVSS
5.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 3.16.72; 3.17 before 3.18.140; 3.19 before 4.4.180; 4.5 before 4.9.175; 4.10 before 4.14.118; 4.15 before 4.19.42 · source: NVD
AI
Active IQ Unified Manager · Netapp
9.5 and later · source: NVD
DL
Debian Linux · Debian
8.0; 9.0; 10.0 · source: NVD
HC
Hci Compute Node · Netapp
All versions, or not specified · source: NVD
LE
Leap · Opensuse
15.0; 15.1 · source: NVD
SN
Snapprotect · Netapp
All versions, or not specified · source: NVD
SH
Solidfire & Hci Management Node · Netapp
All versions, or not specified · source: NVD
SH
Solidfire & Hci Storage Node · Netapp
All versions, or not specified · source: NVD
SR
Storage Replication Adapter For Clustered Data Ontap · Netapp
All versions, or not specified · source: NVD
TS
Traffix Signaling Delivery Controller · F5
5.0.0; 5.1.0 · source: NVD
UL
Ubuntu Linux · Canonical
16.04 · source: NVD
VP
Vasa Provider For Clustered Data Ontap · Netapp
7.2 and later · source: NVD
Affected product
KE
Kernel
Linux
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20836
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20836
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
Third Party Advisory
http://www.securityfocus.com/bid/108196
Patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae
Patch
https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae
Mailing List
https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
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