CVE-2026-64116
ipv6: ioam: add NULL check for idev in ipv6_hop_ioam()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 19, 2026 |
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Affected Versions
Linux / Linux
9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < c7e8971abd70e9d022f1c251ba2508f8dc7f2db8 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 09cbfd4b81ae90963dadb1de99b63b702e73290a 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 1dca7e491f070ac49b3d934f16ee953a53b37f38 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < 902daac307eb7e1955ce05b071950f3cba88c963 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < abdd03229414b5a52943b65a60f34b84cea5ac59 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < cf75eb6617042c8cff6112daeed7791809fc9dd2 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 < d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9
Linux / Linux
5.15
References
git.kernel.org: https://git.kernel.org/stable/c/c7e8971abd70e9d022f1c251ba2508f8dc7f2db8 git.kernel.org: https://git.kernel.org/stable/c/09cbfd4b81ae90963dadb1de99b63b702e73290a git.kernel.org: https://git.kernel.org/stable/c/1dca7e491f070ac49b3d934f16ee953a53b37f38 git.kernel.org: https://git.kernel.org/stable/c/902daac307eb7e1955ce05b071950f3cba88c963 git.kernel.org: https://git.kernel.org/stable/c/abdd03229414b5a52943b65a60f34b84cea5ac59 git.kernel.org: https://git.kernel.org/stable/c/cf75eb6617042c8cff6112daeed7791809fc9dd2 git.kernel.org: https://git.kernel.org/stable/c/d4ea0dfd75011b78cebf3808f98ac4c4f51a6fb9