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CVE-2018-1000200

Description

The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed processs final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reapers unmap_page_range() since the vmas VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).

Risk Information

Base Score
5.5
MODERATE
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.084

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-3752-1) linux-image-4.15.0-1018-gcp_4.15.0-1018.19_amd64.debLinux
Linux kernel (USN-3752-1) linux-image-4.15.0-1020-aws_4.15.0-1020.20_amd64.debLinux
Linux kernel (USN-3752-1) linux-image-4.15.0-1020-kvm_4.15.0-1020.20_amd64.debLinux
Linux kernel (USN-3752-1) linux-image-4.15.0-33-generic_4.15.0-33.36_i386.debLinux
Linux kernel (USN-3752-1) linux-image-4.15.0-33-generic_4.15.0-33.36_amd64.debLinux
Linux kernel (USN-3752-1) linux-image-4.15.0-33-lowlatency_4.15.0-33.36_i386.debLinux
Linux kernel (USN-3752-1) linux-image-4.15.0-33-lowlatency_4.15.0-33.36_amd64.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-4.15.0-33-generic_4.15.0-33.36~16.04.1_i386.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-4.15.0-33-generic_4.15.0-33.36~16.04.1_amd64.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-generic-hwe-16.04_4.15.0.33.55_i386.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-generic-hwe-16.04_4.15.0.33.55_amd64.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-4.15.0-33-lowlatency_4.15.0-33.36~16.04.1_i386.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-4.15.0-33-lowlatency_4.15.0-33.36~16.04.1_amd64.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-lowlatency-hwe-16.04_4.15.0.33.55_i386.debLinux
Linux hardware enablement (HWE) kernel (USN-3752-2) linux-image-lowlatency-hwe-16.04_4.15.0.33.55_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3752-3) linux-image-azure_4.15.0.1022.28_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3752-3) linux-image-4.15.0-1017-oem_4.15.0-1017.20_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3752-3) linux-image-4.15.0-1018-gcp_4.15.0-1018.19~16.04.2_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3752-3) linux-image-4.15.0-1022-azure_4.15.0-1022.23_amd64.debLinux
Linux kernel for Microsoft Azure Cloud systems (USN-3752-3) linux-image-4.15.0-1022-azure_4.15.0-1022.22~16.04.1_amd64.debLinux

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