CVE-2026-74406
N/A
N/A
Summary
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
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 9c58c729d32e7cea5772cc44929c6cd61e5a31cd | affected |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < f79c80f173fda9545b220c1f094b65fc06c252d0 | affected |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 08f40c0d23c67c3aa4224c3311e134999c721fb4 | affected |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 4a8cde6f7281ea2c4c290f9ad9923b3631defceb | affected |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < ef44dac2a37f86eeae6b88ed10a6d60b35387dfd | affected |
| Linux | Linux | 5602c48cf87562c2f95b831d690631935e834295 < 30a45c0bffdd62350261e2f2689fdba426a33578 | affected |
| Linux | Linux | 4.7 | affected |
| Linux | Linux | 0 < 4.7 | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.97 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd
- https://git.kernel.org/stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0
- https://git.kernel.org/stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4
- https://git.kernel.org/stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb
- https://git.kernel.org/stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd
- https://git.kernel.org/stable/c/30a45c0bffdd62350261e2f2689fdba426a33578
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