CVE-2019-11487 json
The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of…
published 2019-04-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3160
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- linux linux_kernel 4.4.216, 4.9.181, 4.14.116, 4.19.39, 5.0.12
- linux Debian 14, Debian 13, Debian 12 4.19.37-1
debian advisories DEBIAN-CVE-2019-11487
- linux Ubuntu 16.04 LTS 4.4.0-165.193
- linux Ubuntu 18.04 LTS 4.15.0-60.67
- linux-aws Ubuntu 16.04 LTS 4.4.0-1095.106
- linux-aws Ubuntu 18.04 LTS 4.15.0-1047.49
- linux-gcp Ubuntu 16.04 LTS 4.15.0-1041.43
- linux-gcp Ubuntu 18.04 LTS 4.15.0-1042.45
- linux-hwe Ubuntu 16.04 LTS 4.15.0-60.67~16.04.1
- linux-hwe Ubuntu 18.04 LTS 5.0.0-23.24~18.04.1
ubuntu advisories UBUNTU-CVE-2019-11487
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel-alt RHEL 7 4.14.0-115.17.1.el7a
- perf RHEL 7 4.14.0-115.17.1.el7a
- kernel RHEL 7 4.14.0-115.17.1.el7a
- python-perf RHEL 7 4.14.0-115.17.1.el7a
- kernel-tools RHEL 7 4.14.0-115.17.1.el7a
- kernel-tools-libs RHEL 7 4.14.0-115.17.1.el7a
- kernel-bootwrapper RHEL 7 4.14.0-115.17.1.el7a
- kernel-abi-whitelists RHEL 7 4.14.0-115.17.1.el7a
red hat advisories RHSA-2020:0174RHSA-2019:2703RHSA-2020:3230RHSA-2020:2851RHSA-2019:2741RHSA-2020:4182
- kernel-source-rt Real Time Module 15 SP1 4.12.14-14.8.1
- kernel-rt Real Time Module 15 SP1 4.12.14-14.8.1
- kernel-syms-rt Real Time Module 15 SP1 4.12.14-14.8.1
- kernel-rt_debug Real Time Module 15 SP1 4.12.14-14.8.1
- kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.118.1
- kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3 +2 more 4.4.180-94.100.1
- kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3 +2 more 4.4.180-94.100.1
- kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3 +3 more 4.4.180-94.100.1
suse advisories SUSE-SU-2019:2821-1SUSE-SU-2019:2430-1SUSE-SU-2019:1870-1SUSE-SU-2019:1852-1SUSE-SU-2019:1823-2SUSE-SU-2019:1823-1
- kernel-syms openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-obs-qa openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-source openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-default openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-vanilla openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-kvmsmall openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-obs-build openSUSE Leap 15.0 4.12.14-lp150.12.64.1
- kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.7.1
opensuse advisories openSUSE-SU-2019:1579-1openSUSE-SU-2019:1571-1
- github.com/torvalds/linux@6b3a707 commit
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a70… commit
- github.com/torvalds/linux@15fab63 commit
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab6… commit
- github.com/torvalds/linux@8fde12c commit
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12… commit
- github.com/torvalds/linux@88b1a17 commit
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a1… commit
- github.com/torvalds/linux@f958d7b commit
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7… commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2019-11487 updated cvss 7.8
kernel: Count overflow in FUSE request leading to use-after-free issues.
-
Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-80.11.1.el8_0, kernel-debuginfo-common-aarch64 4.18.0-80.11.1.el8_0, kernel-debuginfo-common-ppc64le 4.18.0-80.11.1.el8_0 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-80.11.1.el8_0, kernel 4.18.0-80.11.1.el8_0, bpftool 4.18.0-80.11.1.el8_0, kernel-core 4.18.0-80.11.1.el8_0, kernel-tools 4.18.0-80.11.1.el8_0, python3-perf 4.18.0-80.11.1.el8_0, +15 morefixed: vendor fix RHSA-2019:2703
-
Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1062.18.1.el7, kernel 3.10.0-1062.18.1.el7, bpftool 3.10.0-1062.18.1.el7, python-perf 3.10.0-1062.18.1.el7, kernel-tools 3.10.0-1062.18.1.el7, kernel-tools-libs 3.10.0-1062.18.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.18.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-1062.18.1.el7, kernel 3.10.0-1062.18.1.el7, bpftool 3.10.0-1062.18.1.el7, python-perf 3.10.0-1062.18.1.el7, kernel-tools 3.10.0-1062.18.1.el7, kernel-tools-libs 3.10.0-1062.18.1.el7, +2 morefixed: vendor fix RHSA-2020:0834
-
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) perf 3.10.0-957.56.1.el7, kernel 3.10.0-957.56.1.el7, bpftool 3.10.0-957.56.1.el7, python-perf 3.10.0-957.56.1.el7, kernel-tools 3.10.0-957.56.1.el7, kernel-tools-libs 3.10.0-957.56.1.el7, +2 morefixed: vendor fix RHSA-2020:2851
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Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.18.1.el7fixed: vendor fix RHSA-2020:0834
-
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.56.1.el7fixed: vendor fix RHSA-2020:2851
-
Red Hat Enterprise Linux Desktop (v. 6) kernel 2.6.32-754.35.1.el6, kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6fixed: vendor fix RHSA-2020:4182
-
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.17.1.el7a, kernel 4.14.0-115.17.1.el7a, kernel-alt 4.14.0-115.17.1.el7a, python-perf 4.14.0-115.17.1.el7a, kernel-tools 4.14.0-115.17.1.el7a, kernel-tools-libs 4.14.0-115.17.1.el7a, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.17.1.el7afixed: vendor fix RHSA-2020:0174
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Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-kvm 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-trace 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debug-kvm 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-trace-kvm 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1062.18.1.rt56.1044.el7fixed: vendor fix RHSA-2020:0839
show 19 moreshow fewer
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Red Hat Enterprise Linux HPC Node (v. 6) kernel 2.6.32-754.35.1.el6, kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6fixed: vendor fix RHSA-2020:4182
-
Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-core 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-modules 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-core 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-modules 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-modules-extra 4.18.0-80.11.1.rt9.156.el8_0, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-kvm 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-core 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-modules 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-kvm 4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-core 4.18.0-80.11.1.rt9.156.el8_0, +4 morefixed: vendor fix RHSA-2019:2741
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Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-trace 3.10.0-1062.18.1.rt56.1044.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1062.18.1.rt56.1044.el7fixed: vendor fix RHSA-2020:0839
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Red Hat Enterprise Linux Server (v. 6) kernel 2.6.32-754.35.1.el6, kernel-kdump 2.6.32-754.35.1.el6, kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-ppc64 2.6.32-754.35.1.el6, kernel-debuginfo-common-s390x 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6fixed: vendor fix RHSA-2020:4182
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Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1062.18.1.el7, kernel 3.10.0-1062.18.1.el7, bpftool 3.10.0-1062.18.1.el7, python-perf 3.10.0-1062.18.1.el7, kernel-kdump 3.10.0-1062.18.1.el7, kernel-tools 3.10.0-1062.18.1.el7, +7 morefixed: vendor fix RHSA-2020:0834
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Red Hat Enterprise Linux Server AUS (v. 7.4) perf 3.10.0-693.71.2.el7, kernel 3.10.0-693.71.2.el7, python-perf 3.10.0-693.71.2.el7, kernel-tools 3.10.0-693.71.2.el7, kernel-tools-libs 3.10.0-693.71.2.el7, kernel-abi-whitelists 3.10.0-693.71.2.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.4) perf 3.10.0-693.71.2.el7, kernel 3.10.0-693.71.2.el7, python-perf 3.10.0-693.71.2.el7, kernel-tools 3.10.0-693.71.2.el7, kernel-tools-libs 3.10.0-693.71.2.el7, kernel-bootwrapper 3.10.0-693.71.2.el7, +3 morefixed: vendor fix RHSA-2020:3230
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Red Hat Enterprise Linux Server EUS (v. 7.6) perf 3.10.0-957.56.1.el7, kernel 3.10.0-957.56.1.el7, bpftool 3.10.0-957.56.1.el7, python-perf 3.10.0-957.56.1.el7, kernel-kdump 3.10.0-957.56.1.el7, kernel-tools 3.10.0-957.56.1.el7, +7 morefixed: vendor fix RHSA-2020:2851
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Red Hat Enterprise Linux Server Optional (v. 6) kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-ppc64 2.6.32-754.35.1.el6, kernel-debuginfo-common-s390x 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6fixed: vendor fix RHSA-2020:4182
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Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1062.18.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1062.18.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.18.1.el7fixed: vendor fix RHSA-2020:0834
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Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.71.2.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.71.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.71.2.el7fixed: vendor fix RHSA-2020:3230
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Red Hat Enterprise Linux Server Optional EUS (v. 7.6) kernel-debuginfo-common-ppc64 3.10.0-957.56.1.el7, kernel-debuginfo-common-x86_64 3.10.0-957.56.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-957.56.1.el7fixed: vendor fix RHSA-2020:2851
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Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.71.2.el7 Red Hat Enterprise Linux Server TUS (v. 7.4) perf 3.10.0-693.71.2.el7, kernel 3.10.0-693.71.2.el7, python-perf 3.10.0-693.71.2.el7, kernel-tools 3.10.0-693.71.2.el7, kernel-tools-libs 3.10.0-693.71.2.el7, kernel-abi-whitelists 3.10.0-693.71.2.el7, +1 morefixed: vendor fix RHSA-2020:3230
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Red Hat Enterprise Linux Workstation (v. 6) kernel 2.6.32-754.35.1.el6, kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6fixed: vendor fix RHSA-2020:4182
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Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1062.18.1.el7, kernel 3.10.0-1062.18.1.el7, bpftool 3.10.0-1062.18.1.el7, python-perf 3.10.0-1062.18.1.el7, kernel-tools 3.10.0-1062.18.1.el7, kernel-tools-libs 3.10.0-1062.18.1.el7, +2 morefixed: vendor fix RHSA-2020:0834
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Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-debuginfo-common-i686 2.6.32-754.35.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.35.1.el6fixed: vendor fix RHSA-2020:4182
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Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1062.18.1.el7fixed: vendor fix RHSA-2020:0834
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Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.71.2.rt56.670.el6rt, kernel-rt-trace 3.10.0-693.71.2.rt56.670.el6rt, kernel-rt-vanilla 3.10.0-693.71.2.rt56.670.el6rt, kernel-rt-firmware 3.10.0-693.71.2.rt56.670.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.71.2.rt56.670.el6rtfixed: vendor fix RHSA-2020:3266
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Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS perf 3.10.0-957.56.1.el7, python-perf 3.10.0-957.56.1.el7fixed: vendor fix RHSA-2020:2851
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Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) kernel-headers 3.10.0-957.56.1.el7 Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-754.35.1.el6, kernel-firmware 2.6.32-754.35.1.el6, kernel-abi-whitelists 2.6.32-754.35.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-754.35.1.el6not affected: vulnerable code not present
11 more not affected in the full advisory
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=1752 referenced PoC, tagged "exploit" by a source, unverified
- lwn.net https://lwn.net/Articles/786044/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-416 Use After Free
- Technology feeds
References
-
github.com
/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350a
patch, third-party-advisory
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a
patch, vendor-advisory
-
github.com
/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
patch, third-party-advisory
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
patch, vendor-advisory
-
github.com
/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64
patch, third-party-advisory
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8fde12ca79aff9b5ba951fce1a2641901b8d8e64
patch, vendor-advisory
-
github.com
/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397
patch, third-party-advisory
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88b1a17dfc3ed7728316478fae0f5ad508f50397
patch, vendor-advisory
-
github.com
/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3
patch, third-party-advisory
-
git.kernel.org
/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3
patch, vendor-advisory
-
bugs.chromium.org
/p/project-zero/issues/detail?id=1752
exploit, mitigation, third-party-advisory
-
lwn.net
/Articles/786044/
exploit, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-06/msg00039.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-06/msg00040.html
vendor-advisory, mailing-list, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-06/msg00048.html
vendor-advisory, mailing-list, third-party-advisory
-
usn.ubuntu.com
/4069-1/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/4069-2/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/4115-1/
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/4118-1/
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:2703
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:2741
vendor-advisory, third-party-advisory
-
usn.ubuntu.com
/4145-1/
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2020:0174
vendor-advisory, third-party-advisory
-
securityfocus.com
/bid/108054
vdb-entry, third-party-advisory
-
openwall.com
/lists/oss-security/2019/04/29/1
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/09/msg00014.html
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/09/msg00015.html
mailing-list, third-party-advisory
-
security.netapp.com
/advisory/ntap-20190517-0005/
third-party-advisory
-
oracle.com
/security-alerts/cpuApr2021.html
third-party-advisory
-
support.f5.com
/csp/article/K14255532
third-party-advisory
Sources
- CVE List CVE-2019-11487
- NVD CVE-2019-11487
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.