CVE-2026-63969

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-63969
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in rt6_fill_node() Sashiko reported this issue [1]. Apply the same fix as commit f8d8ce1b515a ("ipv6: fix possible infinite loop in fib6_info_uses_dev()"). Writers holding tb6_lock can list_del_rcu(&rt->fib6_siblings) without waiting for RCU readers; rt->fib6_siblings.next then still points into the old ring and this softirq-side walker never reaches &rt->fib6_siblings, causing a CPU stall. fib6_del_route() always WRITE_ONCE()s rt->fib6_nsiblings to 0 before list_del_rcu(), so an inside-loop check is a reliable detach signal. [1] https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/279853aec9f58d5cd723e6e5617c1c3337b30383 Patch
https://git.kernel.org/stable/c/5e40de719ee76b8d96e2556ce36dbd3bd07bf37d Patch
https://git.kernel.org/stable/c/9f72412bcf60144f252b0d6205106abf14344abc Patch
https://git.kernel.org/stable/c/b014a63d2f2c2c767762b548381882dfb1655529 Patch
https://git.kernel.org/stable/c/c65b1f60237daac7c56c2652e064cc566a45dc81 Patch
https://git.kernel.org/stable/c/dc36a04621dcc2447dae428709207810b6c06e14 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
History

12 Nov 2026, 15:03

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CWE CWE-835
References () https://git.kernel.org/stable/c/279853aec9f58d5cd723e6e5617c1c3337b30383 - () https://git.kernel.org/stable/c/279853aec9f58d5cd723e6e5617c1c3337b30383 - Patch
References () https://git.kernel.org/stable/c/5e40de719ee76b8d96e2556ce36dbd3bd07bf37d - () https://git.kernel.org/stable/c/5e40de719ee76b8d96e2556ce36dbd3bd07bf37d - Patch
References () https://git.kernel.org/stable/c/9f72412bcf60144f252b0d6205106abf14344abc - () https://git.kernel.org/stable/c/9f72412bcf60144f252b0d6205106abf14344abc - Patch
References () https://git.kernel.org/stable/c/b014a63d2f2c2c767762b548381882dfb1655529 - () https://git.kernel.org/stable/c/b014a63d2f2c2c767762b548381882dfb1655529 - Patch
References () https://git.kernel.org/stable/c/c65b1f60237daac7c56c2652e064cc566a45dc81 - () https://git.kernel.org/stable/c/c65b1f60237daac7c56c2652e064cc566a45dc81 - Patch
References () https://git.kernel.org/stable/c/dc36a04621dcc2447dae428709207810b6c06e14 - () https://git.kernel.org/stable/c/dc36a04621dcc2447dae428709207810b6c06e14 - Patch
Information

Published : 2026-07-19 16:17

Updated : 2026-11-12 15:03

NVD link : CVE-2026-63969

Mitre link : CVE-2026-63969

CVE.ORG link : CVE-2026-63969

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')