7.8

CVE-2023-3390: Use-after-free in Linux kernel's netfilter subsystem

Modified
AliasesUBUNTU-CVE-2023-3390DEBIAN-CVE-2023-3390
Published 28-06-2023Last modified 22-07-2026

Vulnerability summary

CVE-2023-3390 is a high (CVSS 7.8) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 60.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.91%
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 55 · Duplicates 1 · Related 29
DLA-3512-1DLA-3710-1DSA-5448-1DSA-5461-1LSN-0097-1MGASA-2023-0237

Timeline

  1. 28-06-2023
    PublishedVulnerability first disclosed.
  2. 22-07-2026
    Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.91%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.91% 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.

Ubuntu104 products
  • linux< 4.4.0-243.277 | < 4.15.0-214.225 | < 5.4.0-155.172 | < 5.15.0-78.85
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1121.127 | < 4.4.0-1159.174 | < 4.15.0-1159.172 | < 5.4.0-1106.114 | < 5.15.0-1040.45
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Netapp5 products
Debian1 product
  • linux< 6.1.37-1 | < 6.3.11-1
Linux1 product
  • linux_kernel≥ 3.16, < 4.14.322 | ≥ 4.15, < 4.19.291 | ≥ 4.20, < 5.4.251 | ≥ 5.5, < 5.10.188 | ≥ 5.11, < 5.15.118 | ≥ 5.16, < 6.1.35 | ≥ 6.2, < 6.3.9

4 vendors · 111 products

References

27 links
Show all 27 references