CVE-2019-11487 Information

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html http://www.openwall.com/lists/oss-security/2019/04/29/1 http://www.securityfocus.com/bid/108054 https://access.redhat.com/errata/RHSA-2019:2703 https://access.redhat.com/errata/RHSA-2019:2741 https://access.redhat.com/errata/RHSA-2020:0174 https://bugs.chromium.org/p/project-zero/issues/detail?id=1752 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3 https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350a https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397 https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64 https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3 https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html https://lwn.net/Articles/786044/ https://security.netapp.com/advisory/ntap-20190517-0005/ https://support.f5.com/csp/article/K14255532 https://usn.ubuntu.com/4069-1/ https://usn.ubuntu.com/4069-2/ https://usn.ubuntu.com/4115-1/ https://usn.ubuntu.com/4118-1/ https://usn.ubuntu.com/4145-1/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8