CVE-2019-11487

HIGH

Linux kernel <5.1-rc5 - Use After Free

Title source: llm
STIX 2.1

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.

References (30)

Core 30
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/108054
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/04/29/1
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4069-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4069-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4115-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4118-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2703
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2741
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4145-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0174
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190517-0005/
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuApr2021.html
Exploit, Mitigation, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/project-zero/issues/detail?id=1752
Exploit, Third Party Advisory x_refsource_misc
https://lwn.net/Articles/786044/
Third Party Advisory x_refsource_confirm
https://support.f5.com/csp/article/K14255532

Scores

CVSS v3 7.8
EPSS 0.0011
EPSS Percentile 29.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (6)
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.04
debian/debian_linux 8.0
linux/linux_kernel 5.1 rc1 (4 CPE variants)
linux/linux_kernel < 4.4.216
Published Apr 23, 2019
Tracked Since Feb 18, 2026