7.8

CVE-2018-17182

Exploit

An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.

Data is provided by the National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 3.16 < 3.16.58
LinuxLinux Kernel Version >= 3.17 < 3.18.123
LinuxLinux Kernel Version >= 3.19 < 4.4.157
LinuxLinux Kernel Version >= 4.5 < 4.9.128
LinuxLinux Kernel Version >= 4.10 < 4.14.71
LinuxLinux Kernel Version >= 4.15 < 4.18.9
CanonicalUbuntu Linux Version14.04 SwEditionlts
CanonicalUbuntu Linux Version16.04 SwEditionlts
CanonicalUbuntu Linux Version18.04 SwEditionlts
DebianDebian Linux Version8.0
DebianDebian Linux Version9.0
NetappElement Software Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 2.5% 0.848
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.