USN-8390-1: linux Ubuntu

CVSS: UnknownPublished
Published 04-06-2026Last modified 30-06-2026
Open JSON

Vulnerability summary

USN-8390-1 is a vulnerability in linux Ubuntu with no CVSS score yet.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
Not scored
0%100%
No EPSS score yet
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

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

Timeline

  1. 04-06-2026
    PublishedVulnerability first disclosed.
  2. 30-06-2026
    Last modifiedVulnerability information updated.

Description

linux, linux-azure, linux-azure-4.15, linux-azure-fips, linux-fips, linux-gcp-4.15, linux-gcp-fips, linux-kvm, 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

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

Ubuntu9 products
  • linux< 4.15.0-251.263
  • linux-azure< 4.15.0-1202.217~14.04.1
  • linux-azure-4.15< 4.15.0-1202.217
  • linux-azure-fips< 4.15.0-2111.117
  • linux-fips< 4.15.0-1148.160

1 vendor · 9 products

References

2 links