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Vulnerability Details : CVE-2019-11487

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.
Publish Date : 2019-04-23 Last Update Date : 2019-05-17
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 416

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:2703: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20192703 unix
RHSA-2019:2741: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20192741 unix
RHSA-2020:0834: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20200834 unix
RHSA-2020:0839: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20200839 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-11487

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 5.1 RC2 Version Details Vulnerabilities
2 OS Linux Linux Kernel 5.1 RC3 Version Details Vulnerabilities
3 OS Linux Linux Kernel 5.1 RC4 Version Details Vulnerabilities
4 OS Linux Linux Kernel 5.1 Version Details Vulnerabilities
5 OS Linux Linux Kernel 5.1 RC1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 5

- References For CVE-2019-11487

https://lwn.net/Articles/786044/
https://security.netapp.com/advisory/ntap-20190517-0005/ CONFIRM
https://github.com/torvalds/linux/commit/f958d7b528b1b40c44cfda5eabe2d82760d868c3
https://github.com/torvalds/linux/commit/6b3a707736301c2128ca85ce85fb13f60b5e350a
https://github.com/torvalds/linux/commit/88b1a17dfc3ed7728316478fae0f5ad508f50397
https://github.com/torvalds/linux/commit/8fde12ca79aff9b5ba951fce1a2641901b8d8e64
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=6b3a707736301c2128ca85ce85fb13f60b5e350a
https://github.com/torvalds/linux/commit/15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f958d7b528b1b40c44cfda5eabe2d82760d868c3
http://www.openwall.com/lists/oss-security/2019/04/29/1
MLIST [oss-security] 20190429 Linux kernel: multiple issues
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15fab63e1e57be9fdb5eec1bbc5916e9825e9acb
http://www.securityfocus.com/bid/108054
BID 108054 Linux Kernel CVE-2019-11487 Multiple Denial of Service Vulnerabilities Release Date:2019-04-23
https://bugs.chromium.org/p/project-zero/issues/detail?id=1752

- Metasploit Modules Related To CVE-2019-11487

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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