CVSS 7.5 · High EPSS 0,70%
Kerentanan NULL Pointer Dereference pada linux kernel. Skor CVSS 3.1 7.5 (High) menurut CNA.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 5.15 hingga sebelum 5.15.210 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.176 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.143 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.92 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.18.34 |
| linux | linux kernel | Versi 6.19 hingga sebelum 7.0.11 |
| linux | linux kernel | Versi 7.1 rc1 |
| linux | linux kernel | Versi 7.1 rc2 |
| linux | linux kernel | Versi 7.1 rc3 |
| linux | linux kernel | Versi 7.1 rc4 |