In the Linux kernel, the following vulnerability has been resolved:
udp: fix potential use-after-free in tunnel segmentation
__skb_udp_tunnel_segment() gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb->head, the saved UDP header pointer is no longer valid.
Get the UDP header after the pull to avoid a potential use-after-free.
CVSS Details
- CVSS 3.1 Base Score: 10
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-tools-develUpgrade bpftool6.18Upgrade kernel6.18-develUpgrade microvm-kernel6.18Upgrade kernel6.18-tools-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-modules-extra-commonUpgrade python3-perf6.18Upgrade perf6.18Upgrade kernel6.18-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.18Upgrade kernel6.18-headersUpgrade kernel6.18-debuginfo-common-x86_64Upgrade perf6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel-livepatch-6.18.48-107.148Upgrade kernel6.18-modules-extra | Sep 30, 2026 | Aug 22, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Aug 26, 2026 | Aug 26, 2026 |
| Redhat_linux | — | No solution exists | Aug 26, 2026 | Aug 22, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 15, 2026 | Aug 22, 2026 |
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