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Red Hat OpenShift: CVE-2019-11487: kernel: Count overflow in FUSE request leading to use-after-free issues.

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Red Hat OpenShift: CVE-2019-11487: kernel: Count overflow in FUSE request leading to use-after-free issues.

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
04/23/2019
Created
12/30/2020
Added
12/29/2020
Modified
12/29/2020

Description

The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests.

Solution(s)

  • linuxrpm-upgrade-redhat-coreos

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