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CVE-2018-20836

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.

Risk Information

Base Score
8.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
3.89

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-4076-1) linux-image-aws_4.4.0.1088.91_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-kvm_4.4.0.1052.52_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-generic_4.4.0.157.165_i386.debLinux
Linux kernel (USN-4076-1) linux-image-generic_4.4.0.157.165_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-virtual_4.4.0.157.165_i386.debLinux
Linux kernel (USN-4076-1) linux-image-virtual_4.4.0.157.165_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-lowlatency_4.4.0.157.165_i386.debLinux
Linux kernel (USN-4076-1) linux-image-lowlatency_4.4.0.157.165_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-4.4.0-1052-kvm_4.4.0-1052.59_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-4.4.0-1088-aws_4.4.0-1088.99_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-4.4.0-157-generic_4.4.0-157.185_i386.debLinux
Linux kernel (USN-4076-1) linux-image-4.4.0-157-generic_4.4.0-157.185_amd64.debLinux
Linux kernel (USN-4076-1) linux-image-4.4.0-157-lowlatency_4.4.0-157.185_i386.debLinux
Linux kernel (USN-4076-1) linux-image-4.4.0-157-lowlatency_4.4.0-157.185_amd64.debLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-debuginfo-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debuginfo-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debugsource-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-devel-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-azure-4.12.14-16.13.1.noarch.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-azure-4.12.14-16.13.1.noarch.rpmLinux
SUSE-SU-2020:1118-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-azure-4.12.14-16.13.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-debuginfo-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debuginfo-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debugsource-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-debuginfo-4.12.14-122.20.1.x86_64.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-4.12.14-122.20.1.noarch.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-macros-4.12.14-122.20.1.noarch.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-4.12.14-122.20.1.noarch.rpmLinux
SUSE-SU-2020:1142-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-4.12.14-122.20.1.x86_64.rpmLinux
Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition) Vulnerability (CVE-2018-20836)NCM

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234