7

CVE-2022-41222

Exploit

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

Data is provided by the National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 5.0 < 5.4.211
LinuxLinux Kernel Version >= 5.5 < 5.10.137
LinuxLinux Kernel Version >= 5.11 < 5.12.18
LinuxLinux Kernel Version >= 5.13 < 5.13.3
DebianDebian Linux Version10.0
CanonicalUbuntu Linux Version18.04 SwEditionlts
CanonicalUbuntu Linux Version20.04 SwEditionlts
CanonicalUbuntu Linux Version22.04 SwEditionlts
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.01% 0.017
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.