CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's handling of IOAM Hop-by-Hop options in IPv6, where a NULL pointer dereference can occur if the interface is being torn down concurrently. This could lead to system crashes or instability, making it critical for organizations running Linux systems to prioritize patching this issue to maintain operational integrity. System administrators and security teams should assess their environments for affected kernel versions and apply the necessary updates promptly.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: add NULL check for idev in ipv6_hop_ioam() Reported by Sashiko: The function ipv6_hop_ioam() accesses __in6_dev_get(skb->dev)->cnf.ioam6_enabled without validating the returned idev pointer. Because addrconf_ifdown() can concurrently clear dev->ip6_ptr via RCU, __in6_dev_get() can return NULL during interface teardown, which could cause a NULL pointer dereference when processing an IOAM Hop-by-Hop option. Let's add a check and use SKB_DROP_REASON_IPV6DISABLED accordingly.
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