6

CVE-2026-90166: linux

CVSS: 6.0v4.0MediumReceived
AliasesUBUNTU-CVE-2026-90166DEBIAN-CVE-2026-90166
Published 17-09-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-90166 is a medium (CVSS 6.0) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.4% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.0/10
010
Medium · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.21%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:11893-1

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request() See the procedure below: ksmbd_tree_conn_connect ksmbd_share_config_get share->name = kstrdup() // fail if (!test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) // false // do not check `share->name` ksmbd_ipc_tree_connect_request strlen(share->name) // null-ptr-deref

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

+0.01 pp

From 0.20% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < 5ffd180307a5ea34dae7f90ff9573ebed6b7fb12 | ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < 4eb74a34ea401abfbbd5991076715dae3de938df | ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < 8461f27902727ad434375caf13a0100aafc0340f | ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < 7065d3648b1a48d2c49da3d6364dd3c4d503b10c | ≥ e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, < d2ccf905f47d2344270749f4dfa905afcd3edeb0 | 5.15

3 vendors · 160 products

References

9 links