CVE-2024-47707
kernel: ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 21, 2024
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's IPv6 networking component. A local user could exploit a vulnerability related to a missing check for a null pointer, which can cause the system to attempt to access an invalid memory location. This flaw leads to a system crash, resulting in a Denial of Service (DoS).
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
To mitigate this issue, disable IPv6 if it is not required for system operation. This can be achieved by adding ipv6.disable=1 to the kernel boot parameters. A system reboot is required for this change to take effect. Disabling IPv6 may impact network functionality if IPv6 is in use.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference