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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74406
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:42 UTC
Updated2026-08-15 06:22:42 UTC
DescriptionIn 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().

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5602c48cf87562c2f95b831d690631935e834295 9c58c729d32e7cea5772cc44929c6cd61e5a31cd git Not specified
CNA Linux Linux affected 5602c48cf87562c2f95b831d690631935e834295 f79c80f173fda9545b220c1f094b65fc06c252d0 git Not specified
CNA Linux Linux affected 5602c48cf87562c2f95b831d690631935e834295 08f40c0d23c67c3aa4224c3311e134999c721fb4 git Not specified
CNA Linux Linux affected 5602c48cf87562c2f95b831d690631935e834295 4a8cde6f7281ea2c4c290f9ad9923b3631defceb git Not specified
CNA Linux Linux affected 5602c48cf87562c2f95b831d690631935e834295 ef44dac2a37f86eeae6b88ed10a6d60b35387dfd git Not specified
CNA Linux Linux affected 5602c48cf87562c2f95b831d690631935e834295 30a45c0bffdd62350261e2f2689fdba426a33578 git Not specified
CNA Linux Linux affected 4.7 Not specified
CNA Linux Linux unaffected 4.7 semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/30a45c0bffdd62350261e2f2689fdba426a33578 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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