CVE-2019-12378
kernel: unchecked kmalloc of new_ra in ip6_ra_control leads to denial of service
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · May 25, 2019
Updated · June 28, 2026
Description
A flaw was discovered in the Linux kernel's implementation of IPv6 router advertisement handling. Under low-memory-free conditions a kmalloc request may fail leaving the system to crash shortly after with a null pointer dereference. The attacker must be able to send IPv6 RA packets to this host, most routers will not forward these packets requiring the attacker to be on the local network.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 5.7CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference