CVE-2026-74406
CRITICAL
INFO
Priority: 0.05
BB Relevance:
80/100
Published: 2026-08-15
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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 Software (9)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 022af89207fcc992ec5c712c14e2e018c335eb1e |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < a3104cc1fed994519538301efcaab175f9af6008 |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 9c58c729d32e7cea5772cc44929c6cd61e5a31cd |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < f79c80f173fda9545b220c1f094b65fc06c252d0 |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 08f40c0d23c67c3aa4224c3311e134999c721fb4 |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 4a8cde6f7281ea2c4c290f9ad9923b3631defceb |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < ef44dac2a37f86eeae6b88ed10a6d60b35387dfd |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 30a45c0bffdd62350261e2f2689fdba426a33578 |
| Linux | Linux | 4.7 |