5.5

CVE-2020-7462

In 11.4-PRERELEASE before r360733 and 11.3-RELEASE before p13, improper mbuf handling in the kernel causes a use-after-free bug by sending IPv6 Hop-by-Hop options over the loopback interface. The use-after-free situation may result in unintended kernel behaviour including a kernel panic.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Freebsd ≫ Freebsd Version 11.3 Update -
Freebsd ≫ Freebsd Version 11.3 Update p1
Freebsd ≫ Freebsd Version 11.3 Update p10
Freebsd ≫ Freebsd Version 11.3 Update p11
Freebsd ≫ Freebsd Version 11.3 Update p12
Freebsd ≫ Freebsd Version 11.3 Update p2
Freebsd ≫ Freebsd Version 11.3 Update p3
Freebsd ≫ Freebsd Version 11.3 Update p4
Freebsd ≫ Freebsd Version 11.3 Update p5
Freebsd ≫ Freebsd Version 11.3 Update p6
Freebsd ≫ Freebsd Version 11.3 Update p7
Freebsd ≫ Freebsd Version 11.3 Update p8
Freebsd ≫ Freebsd Version 11.3 Update p9
Freebsd ≫ Freebsd Version 11.4 Update -
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.124
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NIST 4.9 3.9 6.9
AV:L/AC:L/Au:N/C:N/I:N/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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://security.FreeBSD.org/advisories/FreeBSD-SA-20:24.ipv6.asc
Vendor Advisory