CVE-2026-80735

Summary

In the Linux kernel, the following vulnerability has been resolved:

ovpn: ensure socket is owned by ovpn before deref sk_user_data

Some subsystems, like BPF SOCKMAP, set sk_user_data without actually setting the encap_type.

For this reason, we must make sure that the type is the one ovpn expects before dereferencing sk_user_data.

Failing to do so may lead to out-of-bounds reads.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf6226ae7a0cd47aaa9175aca6a1e19600f884cbf < 61fb3cca40ff938671474f4a16adb908c19032d7affected
LinuxLinuxf6226ae7a0cd47aaa9175aca6a1e19600f884cbf < 43a31142e1d22b3cf5490bd94a94db7196901734affected
LinuxLinuxf6226ae7a0cd47aaa9175aca6a1e19600f884cbf < 59aed1eb60d70678a53acccb0cb337a26ce6680eaffected
LinuxLinux6.16affected
LinuxLinux0 < 6.16unaffected
LinuxLinux6.18.45 <= 6.18.*unaffected
LinuxLinux7.1.9 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References