CVE-2026-46320
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
tap: free page on error paths in tap_get_user_xdp()
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().
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | 8d03e65eb6cfbffec471a6b65416f93679bf3286 | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | f979971835dddbca86cf99e3b2e2b94a408a1ab2 | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | 3f52a86a482a69294c50a5a2a097bd6f4104990a | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | d30aac0fa00ca0afc3e08174cf7f974a66bdcf05 | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | d68eab61944a9b0826fa2e954e42db1aa3201b7a | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | e27c17346628cb56843a83f93ac63c314c00f388 | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | 18a84c35842e19cd3c5534d8cee73d31863f696d | Unavailable | None listed |
| 0efac27791ee068075d80f07c55a229b1335ce12 | affected | git | 3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.20 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.20 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |