suominen/tunderflow

PoC

Tracking TUNderflow (CVE-2026-81000), the Linux kernel TUN/TAP receive-headroom underflow

view exploit source poc_in_githubauthor suominenpublished 2026-09-18catalog poc_in_github

exploited CVEs (1)

Known CVEs related to this entry.

ID	severity	EPSS	exploitable	published
CVE-2026-81000US	—	0.36% (29th)	Exploit	2026-09-11
In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tun_get_user() uses tun->align both as skb headroom and when choosing how muc…

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