Threats Tagged 'cve-2026-63969'
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Threats Tagged 'cve-2026-63969'
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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 Join the discussion | GCVE Database | 07/20/2026, 00:00:00 UTC Added: 07/21/2026, 20:00:43 UTC |
A vulnerability in the Linux kernel's IPv6 implementation could cause a possible infinite loop in the rt6_fill_node() function. This issue arises due to improper handling of the fib6_siblings list during route deletion, potentially leading to a CPU stall. The vulnerability has been resolved by applying a fix that ensures reliable detection of route detachment within the loop. Join the discussion | GCVE Database | 07/19/2026, 18:31:47 UTC Added: 07/19/2026, 19:38:18 UTC |
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