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Minhong HeandGreg Kroah-Hartman
d1bd8b9edc
[ Upstream commit0641379352] __in6_dev_get() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER). Add NULL checks for idev returned by __in6_dev_get() in both seg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL pointer dereferences. Fixes:1ababeba4a("ipv6: implement dataplane support for rthdr type 4 (Segment Routing Header)") Fixes:bf355b8d2c("ipv6: sr: add core files for SR HMAC support") Signed-off-by: Minhong He <heminhong@kylinos.cn> Reviewed-by: Andrea Mayer <andrea.mayer@uniroma2.it> Link: https://patch.msgid.link/20260316073301.106643-1-heminhong@kylinos.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Li hongliang <1468888505@139.com> Signed-off-by: Sasha Levin <sashal@kernel.org>