In the Linux kernel, the following vulnerability has been resolved:
ipv6: prevent infinite loop in rt6_nlmsg_size()
While testing prior patch, I was able to trigger
an infinite loop in rt6_nlmsg_size() in the following place:
list_for_each_entry_rcu(sibling, &f6i->fib6_siblings,
fib6_siblings) {
rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len);
}
This is because fib6_del_route() and fib6_add_rt2node()
uses list_del_rcu(), which can confuse rcu readers,
because they might no longer see the head of the list.
Restart the loop if f6i->fib6_nsiblings is zero.
References
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
History
07 Jan 2026, 18:44
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| First Time |
Linux
Debian Debian debian Linux Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | CWE-835 | |
| References | () https://git.kernel.org/stable/c/3c13db3e47e170bab19e574404e7b6be45ea873d - Patch | |
| References | () https://git.kernel.org/stable/c/46aeb66e9e54ed0d56c18615e1c3dbd502b327ab - Patch | |
| References | () https://git.kernel.org/stable/c/54e6fe9dd3b0e7c481c2228782c9494d653546da - Patch | |
| References | () https://git.kernel.org/stable/c/6d345136c9b875f065d226908a29c25cdf9343f8 - Patch | |
| References | () https://git.kernel.org/stable/c/cd8d8bbd9ced4cc5d06d858f67d4aa87745e8f38 - Patch | |
| References | () https://git.kernel.org/stable/c/e1b7932af47f92432be8303d2439d1bf77b0be23 - Patch | |
| References | () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory |
03 Nov 2025, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
20 Aug 2025, 14:40
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
19 Aug 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-08-19 17:15
Updated : 2026-01-07 18:44
NVD link : CVE-2025-38588
Mitre link : CVE-2025-38588
CVE.ORG link : CVE-2025-38588
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')