USN-8390-2: linux-azure Ubuntu

Published
Published 17-06-2026Last modified 19-08-2026

Vulnerability summary

USN-8390-2 is a vulnerability in linux-azure Ubuntu with no CVSS score yet.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS scoreNot scoredRisk metrics not yet published.
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CVE-2026-43284

Timeline

  1. 17-06-2026
    PublishedVulnerability first disclosed.
  2. 19-08-2026
    Last modifiedVulnerability information updated.

Description

linux-azure, linux-gcp, linux-hwe, linux-oracle vulnerability It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to escalate privileges, or possibly escape a container.

CVSS metrics

Risk metrics not yet published.

EPSS trend

No EPSS score has been published for this record yet.

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu4 products
  • linux-azure< 4.15.0-1202.217~16.04.1
  • linux-gcp< 4.15.0-1186.203~16.04.1
  • linux-hwe< 4.15.0-251.263~16.04.1
  • linux-oracle< 4.15.0-1155.166~16.04.1

1 vendor · 4 products

References

2 links