CVE-2019-11487: Use After Free
First published: Mon Apr 22 2019(Updated: )
Linux Kernel is vulnerable to a denial of service, caused by a page->_refcount overflow. A local attacker could exploit this vulnerability using FUSE with ~140GiB RAM usage to cause a denial of service.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <0:2.6.32-754.35.1.el6 | 0:2.6.32-754.35.1.el6 |
| redhat/kernel-rt | <0:3.10.0-1062.18.1.rt56.1044.el7 | 0:3.10.0-1062.18.1.rt56.1044.el7 |
| redhat/kernel-alt | <0:4.14.0-115.17.1.el7a | 0:4.14.0-115.17.1.el7a |
| redhat/kernel | <0:3.10.0-1062.18.1.el7 | 0:3.10.0-1062.18.1.el7 |
| redhat/kernel | <0:3.10.0-693.71.2.el7 | 0:3.10.0-693.71.2.el7 |
| redhat/kernel | <0:3.10.0-957.56.1.el7 | 0:3.10.0-957.56.1.el7 |
| redhat/kernel-rt | <0:4.18.0-80.11.1.rt9.156.el8_0 | 0:4.18.0-80.11.1.rt9.156.el8_0 |
| redhat/kernel | <0:4.18.0-80.11.1.el8_0 | 0:4.18.0-80.11.1.el8_0 |
| redhat/kernel-rt | <1:3.10.0-693.71.2.rt56.670.el6 | 1:3.10.0-693.71.2.rt56.670.el6 |
| IBM Data Risk Manager | <=2.0.6 | |
| 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 | |
| Linux Linux kernel | =5.1-rc2 | |
| Linux Linux kernel | =5.1-rc3 | |
| Linux Linux kernel | =5.1-rc4 | |
| Debian Debian Linux | =8.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.04 | |
| ubuntu/linux | <4.15.0-60.67 | 4.15.0-60.67 |
| ubuntu/linux | <5.0.0-21.22 | 5.0.0-21.22 |
| ubuntu/linux | <5.1~ | 5.1~ |
| ubuntu/linux | <4.4.0-165.193 | 4.4.0-165.193 |
| ubuntu/linux-aws | <4.15.0-1047.49 | 4.15.0-1047.49 |
| ubuntu/linux-aws | <5.0.0-1011.12 | 5.0.0-1011.12 |
| ubuntu/linux-aws | <5.1~ | 5.1~ |
| ubuntu/linux-aws | <4.4.0-1095.106 | 4.4.0-1095.106 |
| ubuntu/linux-aws-5.0 | <5.1~ | 5.1~ |
| ubuntu/linux-aws-hwe | <5.1~ | 5.1~ |
| ubuntu/linux-aws-hwe | <4.15.0-1047.49~16.04.1 | 4.15.0-1047.49~16.04.1 |
| ubuntu/linux-azure | <5.0.0-1014.14~18.04.1 | 5.0.0-1014.14~18.04.1 |
| ubuntu/linux-azure | <5.0.0-1012.12 | 5.0.0-1012.12 |
| ubuntu/linux-azure | <5.1~ | 5.1~ |
| ubuntu/linux-azure | <4.15.0-1056.61 | 4.15.0-1056.61 |
| ubuntu/linux-azure-5.3 | <5.1~ | 5.1~ |
| ubuntu/linux-azure-edge | <5.0.0-1014.14~18.04.1 | 5.0.0-1014.14~18.04.1 |
| ubuntu/linux-azure-edge | <5.1~ | 5.1~ |
| ubuntu/linux-azure-edge | <4.15.0-1056.61 | 4.15.0-1056.61 |
| ubuntu/linux-euclid | <5.1~ | 5.1~ |
| ubuntu/linux-flo | <5.1~ | 5.1~ |
| ubuntu/linux-gcp | <4.15.0-1042.45 | 4.15.0-1042.45 |
| ubuntu/linux-gcp | <5.0.0-1011.11 | 5.0.0-1011.11 |
| ubuntu/linux-gcp | <5.1~ | 5.1~ |
| ubuntu/linux-gcp | <4.15.0-1041.43 | 4.15.0-1041.43 |
| ubuntu/linux-gcp-5.3 | <5.1~ | 5.1~ |
| ubuntu/linux-gcp-edge | <4.15.0-1042.45 | 4.15.0-1042.45 |
| ubuntu/linux-gcp-edge | <5.1~ | 5.1~ |
| ubuntu/linux-gke | <5.1~ | 5.1~ |
| ubuntu/linux-gke-4.15 | <4.15.0-1041.43 | 4.15.0-1041.43 |
| ubuntu/linux-gke-4.15 | <5.1~ | 5.1~ |
| ubuntu/linux-gke-5.0 | <5.1~ | 5.1~ |
| ubuntu/linux-goldfish | <5.1~ | 5.1~ |
| ubuntu/linux-grouper | <5.1~ | 5.1~ |
| ubuntu/linux-hwe | <5.0.0-23.24~18.04.1 | 5.0.0-23.24~18.04.1 |
| ubuntu/linux-hwe | <5.1~ | 5.1~ |
| ubuntu/linux-hwe | <4.15.0-60.67~16.04.1 | 4.15.0-60.67~16.04.1 |
| ubuntu/linux-hwe-edge | <5.1~ | 5.1~ |
| ubuntu/linux-hwe-edge | <4.15.0-60.67~16.04.1 | 4.15.0-60.67~16.04.1 |
| ubuntu/linux-kvm | <4.15.0-1043.43 | 4.15.0-1043.43 |
| ubuntu/linux-kvm | <5.0.0-1011.12 | 5.0.0-1011.12 |
| ubuntu/linux-kvm | <5.1~ | 5.1~ |
| ubuntu/linux-kvm | <4.4.0-1059.66 | 4.4.0-1059.66 |
| ubuntu/linux-lts-trusty | <5.1~ | 5.1~ |
| ubuntu/linux-lts-utopic | <5.1~ | 5.1~ |
| ubuntu/linux-lts-vivid | <5.1~ | 5.1~ |
| ubuntu/linux-lts-wily | <5.1~ | 5.1~ |
| ubuntu/linux-lts-xenial | <5.1~ | 5.1~ |
| ubuntu/linux-maguro | <5.1~ | 5.1~ |
| ubuntu/linux-mako | <5.1~ | 5.1~ |
| ubuntu/linux-manta | <5.1~ | 5.1~ |
| ubuntu/linux-oem | <4.15.0-1056.65 | 4.15.0-1056.65 |
| ubuntu/linux-oem | <4.15.0-1059.68 | 4.15.0-1059.68 |
| ubuntu/linux-oem | <5.1~ | 5.1~ |
| ubuntu/linux-oem-5.4 | <5.1~ | 5.1~ |
| ubuntu/linux-oem-osp1 | <5.0.0-1015.16 | 5.0.0-1015.16 |
| ubuntu/linux-oem-osp1 | <5.0.0-1018.20 | 5.0.0-1018.20 |
| ubuntu/linux-oem-osp1 | <5.1~ | 5.1~ |
| ubuntu/linux-oracle | <4.15.0-1022.25 | 4.15.0-1022.25 |
| ubuntu/linux-oracle | <5.0.0-1004.8 | 5.0.0-1004.8 |
| ubuntu/linux-oracle | <5.1~ | 5.1~ |
| ubuntu/linux-oracle | <4.15.0-1022.25~16.04.1 | 4.15.0-1022.25~16.04.1 |
| ubuntu/linux-oracle-5.0 | <5.1~ | 5.1~ |
| ubuntu/linux-raspi2 | <4.15.0-1044.47 | 4.15.0-1044.47 |
| ubuntu/linux-raspi2 | <5.0.0-1013.13 | 5.0.0-1013.13 |
| ubuntu/linux-raspi2 | <5.1~ | 5.1~ |
| ubuntu/linux-raspi2 | <4.4.0-1123.132 | 4.4.0-1123.132 |
| ubuntu/linux-raspi2-5.3 | <5.1~ | 5.1~ |
| ubuntu/linux-snapdragon | <4.15.0-1062.69 | 4.15.0-1062.69 |
| ubuntu/linux-snapdragon | <5.0.0-1017.18 | 5.0.0-1017.18 |
| ubuntu/linux-snapdragon | <5.1~ | 5.1~ |
| ubuntu/linux-snapdragon | <4.4.0-1127.135 | 4.4.0-1127.135 |
| debian/linux | 4.19.249-2 4.19.304-1 5.10.209-2 5.10.216-1 6.1.76-1 6.1.90-1 6.7.12-1 6.8.9-1 |
Remedy
Preventing loading of the 'fuse' kernel module will prevent attackers from using this exploit against the system; howeve the functionality of being able to access the filesystems that would be allowed by fuse would no longer be allowed . See “How do I blacklist a kernel module to prevent it from loading automatically?" ( https://access.redhat.com/solutions/41278) for instructions on how to disable the 'fuse' kernel module from autoloading. This mitigation may not be suitable if access to the functionality provided by fuse is required.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-11487 https://nvd.nist.gov/vuln/detail/CVE-2019-11487
- https://bugzilla.redhat.com/show_bug.cgi?id=1703063
- https://access.redhat.com/errata/RHSA-2020:4182
- https://access.redhat.com/errata/RHSA-2020:0839
- https://access.redhat.com/errata/RHSA-2020:0174
- https://access.redhat.com/errata/RHSA-2020:0834
- https://access.redhat.com/errata/RHSA-2020:3230
- https://access.redhat.com/errata/RHSA-2020:2851
- https://access.redhat.com/errata/RHSA-2019:2741
- https://access.redhat.com/errata/RHSA-2019:2703
- https://access.redhat.com/errata/RHSA-2020:3266
- https://access.redhat.com/security/cve/cve-2019-11487
- https://exchange.xforce.ibmcloud.com/vulnerabilities/160017
- https://www.ibm.com/support/pages/node/6335281 (Advisory)
- 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://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/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://launchpad.net/bugs/cve/CVE-2019-11487
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6b3a707736301c2128ca85ce85fb13f60b5e350a
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1703064
- https://access.redhat.com/solutions/41278
- https://security-tracker.debian.org/tracker/CVE-2019-11487
- https://ubuntu.com/security/notices/USN-4069-1
- https://ubuntu.com/security/notices/USN-4069-2
- https://ubuntu.com/security/notices/USN-4115-1
- https://ubuntu.com/security/notices/USN-4118-1
- https://ubuntu.com/security/notices/USN-4145-1
- https://www.cve.org/CVERecord?id=CVE-2019-11487
- https://nvd.nist.gov/vuln/detail/CVE-2019-11487
- https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
- https://git.kernel.org/linus/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
- https://git.kernel.org/linus/88b1a17dfc3ed7728316478fae0f5ad508f50397
- https://git.kernel.org/linus/8fde12ca79aff9b5ba951fce1a2641901b8d8e64
- https://git.kernel.org/linus/f958d7b528b1b40c44cfda5eabe2d82760d868c3
- https://ubuntu.com/security/CVE-2019-11487
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/ibm-support
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2019-11487
- agent/last-modified-date
- agent/author
- agent/severity
- agent/remedy
- agent/description
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/weakness
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- agent/references
- agent/softwarecombine
- agent/tags
- agent/event
- package-manager/redhat
- vendor/ibm
- canonical/ibm data risk manager
- version/ibm data risk manager/2.0.6
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/4.5
- version/linux linux kernel/4.10
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- version/linux linux kernel/5.1-rc1
- version/linux linux kernel/5.1-rc2
- version/linux linux kernel/5.1-rc3
- version/linux linux kernel/5.1-rc4
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/19.04
- package-manager/ubuntu
- package-manager/debian