Answer in brief
CVE-2026-46320 records a High severity (CVSS 7.4) vulnerability in tap: free page on error paths in tap_get_user_xdp(). 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.
Answer in brief
CVE-2026-46320 records a High severity (CVSS 7.4) vulnerability in tap: free page on error paths in tap_get_user_xdp(). 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.
CVSS is 7.4. 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 | >=0efac27791ee068075d80f07c55a229b1335ce12 <8d03e65eb6cfbffec471a6b65416f93679bf3286 || >=0efac27791ee068075d80f07c55a229b1335ce12 <f979971835dddbca86cf99e3b2e2b94a408a1ab2 || >=0efac27791ee068075d80f07c55a229b1335ce12 <3f52a86a482a69294c50a5a2a097bd6f4104990a || >=0efac27791ee068075d80f07c55a229b1335ce12 <d30aac0fa00ca0afc3e08174cf7f974a66bdcf05 || >=0efac27791ee068075d80f07c55a229b1335ce12 <d68eab61944a9b0826fa2e954e42db1aa3201b7a || >=0efac27791ee068075d80f07c55a229b1335ce12 <e27c17346628cb56843a83f93ac63c314c00f388 || >=0efac27791ee068075d80f07c55a229b1335ce12 <18a84c35842e19cd3c5534d8cee73d31863f696d || >=0efac27791ee068075d80f07c55a229b1335ce12 <3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2 | 8d03e65eb6cfbffec471a6b65416f93679bf3286, f979971835dddbca86cf99e3b2e2b94a408a1ab2, 3f52a86a482a69294c50a5a2a097bd6f4104990a, d30aac0fa00ca0afc3e08174cf7f974a66bdcf05, d68eab61944a9b0826fa2e954e42db1aa3201b7a, e27c17346628cb56843a83f93ac63c314c00f388, 18a84c35842e19cd3c5534d8cee73d31863f696d, 3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2 |
| Linux/Linuxgeneric | 4.20 | Not reported |
Published upstream
Jun 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
In the Linux kernel, the following vulnerability has been resolved: tap: free page on error paths in tap_get_user_xdp() tap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL, and returns -ENOMEM when build_skb() fails. Both paths jump to the err label without freeing the page that vhost_net_build_xdp() allocated for the frame. tap_sendmsg() discards the per-buffer return value and always returns 0, so vhost_tx_batch() takes the success path and never frees the page; each rejected frame in a batch leaks one page-frag chunk. Free the page on both error paths, before the skb is built. This is the tap counterpart of the same leak in tun_xdp_one().
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.4. 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 | >=0efac27791ee068075d80f07c55a229b1335ce12 <8d03e65eb6cfbffec471a6b65416f93679bf3286 || >=0efac27791ee068075d80f07c55a229b1335ce12 <f979971835dddbca86cf99e3b2e2b94a408a1ab2 || >=0efac27791ee068075d80f07c55a229b1335ce12 <3f52a86a482a69294c50a5a2a097bd6f4104990a || >=0efac27791ee068075d80f07c55a229b1335ce12 <d30aac0fa00ca0afc3e08174cf7f974a66bdcf05 || >=0efac27791ee068075d80f07c55a229b1335ce12 <d68eab61944a9b0826fa2e954e42db1aa3201b7a || >=0efac27791ee068075d80f07c55a229b1335ce12 <e27c17346628cb56843a83f93ac63c314c00f388 || >=0efac27791ee068075d80f07c55a229b1335ce12 <18a84c35842e19cd3c5534d8cee73d31863f696d || >=0efac27791ee068075d80f07c55a229b1335ce12 <3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2 | 8d03e65eb6cfbffec471a6b65416f93679bf3286, f979971835dddbca86cf99e3b2e2b94a408a1ab2, 3f52a86a482a69294c50a5a2a097bd6f4104990a, d30aac0fa00ca0afc3e08174cf7f974a66bdcf05, d68eab61944a9b0826fa2e954e42db1aa3201b7a, e27c17346628cb56843a83f93ac63c314c00f388, 18a84c35842e19cd3c5534d8cee73d31863f696d, 3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2 |
| Linux/Linuxgeneric | 4.20 | Not reported |
Published upstream
Jun 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
In the Linux kernel, the following vulnerability has been resolved: tap: free page on error paths in tap_get_user_xdp() tap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL, and returns -ENOMEM when build_skb() fails. Both paths jump to the err label without freeing the page that vhost_net_build_xdp() allocated for the frame. tap_sendmsg() discards the per-buffer return value and always returns 0, so vhost_tx_batch() takes the success path and never frees the page; each rejected frame in a batch leaks one page-frag chunk. Free the page on both error paths, before the skb is built. This is the tap counterpart of the same leak in tun_xdp_one().
Quoted source text, attributed separately from HOL analysis.