7.1

CVE-2026-46322: linux

CVSS: 7.1v3.1HighModified
AliasesUBUNTU-CVE-2026-46322DEBIAN-CVE-2026-46322
Published 09-06-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-46322 is a high (CVSS 7.1) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 37 · Related 37
OPENSUSE-SU-2026:11014-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22809-1SUSE-SU-2026:22810-1

Timeline

  1. 09-06-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: tun: free page on build_skb failure in tun_xdp_one() When build_skb() fails in tun_xdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhost_net_build_xdp() allocated for the frame. As with the short-frame rejection path, tun_sendmsg() discards the per-buffer error and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page. Each build_skb() failure in a batch leaks one page-frag chunk. Free the page before taking the error path, matching the put_page() the other error exits of tun_xdp_one() already perform.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu163 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-146.146 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1066.69 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 793385c154771603b8671dd8338927221e9d8d78 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 2638a9c1521905bb5c5d1e95c8fbc09f79148ed7 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 60d9c0d6cdde5420d6483c921b16fe5465eb5238 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < d16e38fac09a47bfcf98c1ad65a1bb53f94540f5 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < aa308e9dbb9acb17cacdbbce9e4504f69bac8385 | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < 4fefc6156a162a9f50035c12091a5e5130c82c6e | ≥ 043d222f93ab8c76b56a3b315cd8692e35affb6c, < aa8963fdce667a42fb7f0bdd2909fadcab02f9a8 | 4.20
  • linux_kernel≥ 4.20, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.93 | ≥ 6.13, < 6.18.35 | ≥ 6.19, < 7.0.12 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5
Debian1 product
  • linux< 6.1.176-1 | < 6.12.94-1 | < 7.0.12-1

3 vendors · 166 products

References

38 links
Show all 38 references