CVE-2018-20836
HIGH
8.1
CVSS Score
Published: May 7, 2019 at 01:04 PM UTC
Updated: June 17, 2026 at 01:53 AM UTC
13 products affected across 6 vendorsLinux KernelDebian LinuxUbuntu Linux
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Severity
HIGH8.1
Exploit prediction
EPSS 5%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%Debian Linux· Debiandrupal
95%v < 3.16.723.17 ≤ v < 3.18.1403.19 ≤ v < 4.4.1804.10 ≤ v < 4.14.1184.15 ≤ v < 4.19.424.5 ≤ v < 4.9.175
Affected range stops below 3.16.72, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.18.140, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.14.118, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.42, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.180, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.175, so it looks safe — our inference, not a vendor statement
v ≥ 9.5
All versions
All versions
All versions
All versions
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16ae
- https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16ae
- https://usn.ubuntu.com/4076-1/
References (14)
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.htmlVendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.htmlVDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/108196x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b90cd6f2b905905fb42671009dc0e27c310a16aex_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://github.com/torvalds/linux/commit/b90cd6f2b905905fb42671009dc0e27c310a16aeMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2019/08/msg00016.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.htmlMailing Listx_refsource_BUGTRAQThird Party Advisory
Source: [email protected]
https://seclists.org/bugtraq/2019/Aug/13CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-362CWE-416
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