net: dst_metadata: fix false-positive memcpy overflow in tun_dst_unclone
In the Linux kernel, the following vulnerability has been resolved: net: dst_metadata: fix false-positive memcpy overflow in tun_dst_unclone kmalloc_flex() in metadata_dst_alloc() sets __counted_by for the structure to the options_len, which is then initialized to zero. Later, we're initializing the structure by copy…
Severity high: primary CNA CVSS 8.2 v3.1 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2026-08-28T06:48:36.315Z. Updated 2026-10-16T19:26:30.819Z.