CVE-2026-74705
udp: fix potential use-after-free in tunnel segmentation
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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head, the saved UDP header pointer is no longer valid.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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 22, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < 6a733a38b983d8c2e222f13968209010cf44de87 dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < 19d89b13a43640b2da2f277ee462d919d988cb6f dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < b3df61bb745eb5201eac22679a2839d4ccbf3442 dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < 1ae134c012e10384cdac420b5cc6e0615cde0b55 dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < 5161e67c561c4f28a5d9335a6e859b02511de92b dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < 64d322c288577793eedd352b96ef75234ed380fe dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < 588d4a6795d99d080f74ef0b5f391ea8c453ae5d dbef491ebe7f3a4fb1b9111878b86a426fd540b7 < d0f86fb36eb260abd10007b62c9dcc1028e03e61
Linux / Linux
4.6
References
git.kernel.org: https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87 git.kernel.org: https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f git.kernel.org: https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442 git.kernel.org: https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55 git.kernel.org: https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b git.kernel.org: https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe git.kernel.org: https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d git.kernel.org: https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61