CVE-2019-11487

Name: CVE-2019-11487
Creator: NVD / NIST
Published: 2019-04-23T22:29:05.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2019-11487 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.71%

48.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 4.4.216	—
Linux	Linux Kernel	>= 4.5, < 4.9.181	—
Linux	Linux Kernel	>= 4.10, < 4.14.116	—
Linux	Linux Kernel	>= 4.15, < 4.19.39	—
Linux	Linux Kernel	>= 4.20, < 5.0.12	—
Linux	Linux Kernel	5.1	Rc1
Debian	Debian Linux	8.0	—
Canonical	Ubuntu Linux	16.04	—
Canonical	Ubuntu Linux	18.04	—
Canonical	Ubuntu Linux	19.04	—

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/29/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/108054Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2741Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0174Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1752Exploit, Mitigation, Third Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acbPatch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350aPatch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397Patch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64Patch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acbPatch, Third Party Advisory
https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350aPatch, Third Party Advisory
https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00015.htmlMailing List, Third Party Advisory
https://lwn.net/Articles/786044/Exploit, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190517-0005/Third Party Advisory
https://support.f5.com/csp/article/K14255532Third Party Advisory
https://usn.ubuntu.com/4069-1/Third Party Advisory
https://usn.ubuntu.com/4069-2/Third Party Advisory
https://usn.ubuntu.com/4115-1/Third Party Advisory
https://usn.ubuntu.com/4118-1/Third Party Advisory
https://usn.ubuntu.com/4145-1/Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/29/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/108054Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2741Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0174Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1752Exploit, Mitigation, Third Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acbPatch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350aPatch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397Patch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64Patch, Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acbPatch, Third Party Advisory
https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350aPatch, Third Party Advisory
https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00015.htmlMailing List, Third Party Advisory
https://lwn.net/Articles/786044/Exploit, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190517-0005/Third Party Advisory
https://support.f5.com/csp/article/K14255532Third Party Advisory
https://usn.ubuntu.com/4069-1/Third Party Advisory
https://usn.ubuntu.com/4069-2/Third Party Advisory
https://usn.ubuntu.com/4115-1/Third Party Advisory
https://usn.ubuntu.com/4118-1/Third Party Advisory
https://usn.ubuntu.com/4145-1/Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory

Timeline

Published: Apr 23, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11487?

How severe is CVE-2019-11487?

CVE-2019-11487 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11487?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11487?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST