Answer in brief
CVE-2026-80681 records a Unknown severity vulnerability in vxlan: re-fetch eth header after route_shortcircuit(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ae8840825605f36f98f247323edc150e761cb64e <6375093eb45cd7d89f1945f939eeae3b29d79f56 || >=ae8840825605f36f98f247323edc150e761cb64e <1b7f7b653e3557690047c62f03b80a24ea5a58a5 || >=ae8840825605f36f98f247323edc150e761cb64e <bf045341dfb3e767f0ff94cf240ce3c371973bd4 || >=ae8840825605f36f98f247323edc150e761cb64e <2355c8c26d2aa1b4385b369e67202e47d460d555 || >=ae8840825605f36f98f247323edc150e761cb64e <1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585 || >=ae8840825605f36f98f247323edc150e761cb64e <1235e017aa11cf01e91b613c4c5ed6aa28934fff || >=ae8840825605f36f98f247323edc150e761cb64e <c9dceac9e1c7c772c43c732fc0d325e72835801a || >=ae8840825605f36f98f247323edc150e761cb64e <1395a676ec15a0a02a2a6d86602324f2d5fd41d5 | 6375093eb45cd7d89f1945f939eeae3b29d79f56, 1b7f7b653e3557690047c62f03b80a24ea5a58a5, bf045341dfb3e767f0ff94cf240ce3c371973bd4, 2355c8c26d2aa1b4385b369e67202e47d460d555, 1511631b7cfc4152b10a0a9d04c7a0bf2ddf4585, 1235e017aa11cf01e91b613c4c5ed6aa28934fff, c9dceac9e1c7c772c43c732fc0d325e72835801a, 1395a676ec15a0a02a2a6d86602324f2d5fd41d5 |
| Linux/Linuxgeneric | 3.10 | Not reported |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 28, 2026
In the Linux kernel, the following vulnerability has been resolved: vxlan: re-fetch eth header after route_shortcircuit() Before route_shortcircuit(), the eth header pointer is cached from eth_hdr(skb). Inside route_shortcircuit(), pskb_may_pull() can be called, which may reallocate skb->head. In this case, returning to vxlan_xmit() leaves the cached eth pointer pointing to freed memory, leading to a use-after-free when dereferencing eth->h_dest. Fix this by updating eth = eth_hdr(skb) after calling route_shortcircuit().
Quoted source text, attributed separately from HOL analysis.