ALT-PU-2018-1752-1
Package kernel-image-un-def updated to version 4.14.41-alt0.M80P.1 for branch p8 in task 206459.
Closed vulnerabilities
Published: 2018-06-05
Modified: 2024-11-21
Modified: 2024-11-21
CVE-2018-1000200
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 process's final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper's unmap_page_range() since the vma's VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).
Severity: MEDIUM (5.5)
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References:
- [oss-security] 20180424 CVE-2018-1000200 (Linux): Bad memory access on oom kill of large mlocked process
- [oss-security] 20180424 CVE-2018-1000200 (Linux): Bad memory access on oom kill of large mlocked process
- 104397
- 104397
- RHSA-2018:2948
- RHSA-2018:2948
- https://access.redhat.com/security/cve/cve-2018-1000200
- https://access.redhat.com/security/cve/cve-2018-1000200
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a
- [linux-kernel] 20180417 [patch] mm, oom: fix concurrent munlock and oom reaper unmap
- [linux-kernel] 20180417 [patch] mm, oom: fix concurrent munlock and oom reaper unmap
- [linux-kernel] 20180424 [patch v3 for-4.17] mm, oom: fix concurrent munlock and oom reaper unmap
- [linux-kernel] 20180424 [patch v3 for-4.17] mm, oom: fix concurrent munlock and oom reaper unmap
- USN-3752-1
- USN-3752-1
- USN-3752-2
- USN-3752-2
- USN-3752-3
- USN-3752-3