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high7.0Public exploit code

CVE-2019-11599

The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs…

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

Impact

The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 2.16.12 before 3.16.66
from 3.17 before 4.4.183
from 4.5 before 4.9.188
from 4.10 before 4.14.114
from 4.15 before 4.19.37
from 4.20 before 5.0.10

Weakness classification

CWE-667

References