5.5

CVE-2023-0394: linux linux_kernel NULL Pointer Dereference

Modified
AliasesUBUNTU-CVE-2023-0394DEBIAN-CVE-2023-0394
Published 24-01-2023Last modified 31-03-2025

Vulnerability summary

CVE-2023-0394 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 1.02% chance of exploitation in the next 30 days, higher than 63.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.02%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 50 · Related 40
DLA-3349-1DLA-3403-1DSA-5324-1MGASA-2023-0087MGASA-2023-0088RHSA-2023:2148

Timeline

  1. 24-01-2023
    PublishedVulnerability first disclosed.
  2. 31-03-2025
    Last modifiedVulnerability information updated.

Description

A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network subcomponent in the Linux kernel. This flaw causes the system to crash.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.02%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.02% on 04-10-2026

04-10-202603-11-2026

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

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu91 products
  • linuxAll versions (No fix recorded) | < 4.4.0-239.273 | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-70.77
  • linux-aws< 4.4.0-1117.123 | < 4.4.0-1155.170 | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1034.38
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
Debian1 product
  • linux< 6.1.7-1
Linux1 product

3 vendors · 93 products

References

36 links
Show all 36 references