7.8

CVE-2019-11487

Exploit

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.

Data is provided by the National Vulnerability Database (NVD)
LinuxLinux Kernel Version < 4.4.216
LinuxLinux Kernel Version >= 4.5 < 4.9.181
LinuxLinux Kernel Version >= 4.10 < 4.14.116
LinuxLinux Kernel Version >= 4.15 < 4.19.39
LinuxLinux Kernel Version >= 4.20 < 5.0.12
LinuxLinux Kernel Version5.1 Updaterc1
LinuxLinux Kernel Version5.1 Updaterc2
LinuxLinux Kernel Version5.1 Updaterc3
LinuxLinux Kernel Version5.1 Updaterc4
DebianDebian Linux Version8.0
CanonicalUbuntu Linux Version16.04 SwEditionesm
CanonicalUbuntu Linux Version18.04 SwEditionlts
CanonicalUbuntu Linux Version19.04
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.04% 0.126
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 7.2 3.9 10
AV:L/AC:L/Au:N/C:C/I:C/A:C
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://usn.ubuntu.com/4118-1/
Third Party Advisory
https://usn.ubuntu.com/4115-1/
Third Party Advisory
http://www.securityfocus.com/bid/108054
Third Party Advisory
VDB Entry
https://lwn.net/Articles/786044/
Third Party Advisory
Exploit
https://usn.ubuntu.com/4069-1/
Third Party Advisory
https://usn.ubuntu.com/4069-2/
Third Party Advisory
https://usn.ubuntu.com/4145-1/
Third Party Advisory