5.5

CVE-2026-46214: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46214DEBIAN-CVE-2026-46214
Published 28-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46214 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.17%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 50 · Related 50
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix accept queue count leak on transport mismatch virtio_transport_recv_listen() calls sk_acceptq_added() before vsock_assign_transport(). If vsock_assign_transport() fails or selects a different transport, the error path returns without calling sk_acceptq_removed(), permanently incrementing sk_ack_backlog. After approximately backlog+1 such failures, sk_acceptq_is_full() returns true, causing the listener to reject all new connections. Fix by moving sk_acceptq_added() to after the transport validation, matching the pattern used by vmci_transport and hyperv_transport.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.04 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

No weakness data has been published for this record.

Affected systems

Ubuntu154 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < 2ea5d2c79edcc99c7dbe0bb7518f5e1ee2a2391f | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < fd51e810affa38d735d04261e673b2a5fe9c8665 | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < f66c7904fb6f0e420a654bc90909e64a25d00896 | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < 65c484726e74013a2ec7ba67a34d87760ae8f390 | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < 29371f3cc83e2a92265b4768014a30b80234112f | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < e9edf9893cf26d060705c910a9b62d8cc96ed56a | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < 6d3275fc4ed968938e1d556c344798046776668d | ≥ c0cfa2d8a788fcf45df5bf4070ab2474c88d543a, < 52bcb57a4e8a0865a76c587c2451906342ae1b2d | 5.5
  • linux_kernel≥ 5.5, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.90 | ≥ 6.13, < 6.18.32 | ≥ 6.19, < 7.0.9
Debian1 product
  • linux< 6.1.176-1 | < 6.12.90-1 | < 7.0.9-1

3 vendors · 157 products

References

52 links
Show all 52 references