CVE-2026-46320

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Source
https://cve.org/CVERecord?id=CVE-2026-46320
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46320.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-46320
Downstream
Related
Published
2026-06-09T12:11:12.882Z
Modified
2026-07-11T09:29:27.989239335Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
Summary
tap: free page on error paths in tap_get_user_xdp()
Details

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

tap: free page on error paths in tapgetuser_xdp()

tapgetuserxdp() rejects a frame shorter than ETHHLEN with -EINVAL, and returns -ENOMEM when buildskb() fails. Both paths jump to the err label without freeing the page that vhostnetbuildxdp() allocated for the frame. tapsendmsg() discards the per-buffer return value and always returns 0, so vhosttx_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 tunxdpone().

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46320.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0efac27791ee068075d80f07c55a229b1335ce12
Fixed
8d03e65eb6cfbffec471a6b65416f93679bf3286
Fixed
f979971835dddbca86cf99e3b2e2b94a408a1ab2
Fixed
3f52a86a482a69294c50a5a2a097bd6f4104990a
Fixed
d30aac0fa00ca0afc3e08174cf7f974a66bdcf05
Fixed
d68eab61944a9b0826fa2e954e42db1aa3201b7a
Fixed
e27c17346628cb56843a83f93ac63c314c00f388
Fixed
18a84c35842e19cd3c5534d8cee73d31863f696d
Fixed
3bcf7aec6a9d16438f2cec29f5d7c8d5b8edf9b2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46320.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.20.0
Fixed
5.10.259
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.210
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.176
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.143
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.94
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.36
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.0.12

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46320.json"