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CVE-2026-74406

vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive(). PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive(). udp_tunnel_sock_release() could set sk->sk_user_data to NULL while vxlan_gro_prepare_receive() is running. Let's check if rcu_dereference_sk_user_data() is NULL after skb_gro_remcsum_init().

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 5602c48cf87562c2f95b831d690631935e834295 before 9c58c729d32e7cea5772cc44929c6cd61e5a31cd; affected 5602c48cf87562c2f95b831d690631935e834295 before f79c80f173fda9545b220c1f094b65fc06c252d0; affected 5602c48cf87562c2f95b831d690631935e834295 before 08f40c0d23c67c3aa4224c3311e134999c721fb4; affected 5602c48cf87562c2f95b831d690631935e834295 before 4a8cde6f7281ea2c4c290f9ad9923b3631defceb; affected 5602c48cf87562c2f95b831d690631935e834295 before ef44dac2a37f86eeae6b88ed10a6d60b35387dfd; affected 5602c48cf87562c2f95b831d690631935e834295 before 30a45c0bffdd62350261e2f2689fdba426a33578
Linux / Linuxaffected 4.7; unaffected 0 before 4.7; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.