7.1

CVE-2023-4389: linux linux_kernel Double Free

CVSS: 7.1v3.1HighModified
AliasesUBUNTU-CVE-2023-4389DEBIAN-CVE-2023-4389
Published 16-08-2023Last modified 15-10-2024
Open JSON

Vulnerability summary

CVE-2023-4389 is a high (CVSS 7.1) Double Free vulnerability in linux linux_kernel. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.7% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 10 · Related 10
SUSE-SU-2023:4030-1SUSE-SU-2023:4035-1SUSE-SU-2023:4057-1SUSE-SU-2023:4058-1SUSE-SU-2023:4071-1SUSE-SU-2023:4072-1

Timeline

  1. 16-08-2023
    PublishedVulnerability first disclosed.
  2. 15-10-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.25%

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

Affected systems

Ubuntu63 products
  • linux< 5.15.0-37.39
  • linux-aws< 5.15.0-1011.14
  • 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< 5.17.6-1
Linux1 product
  • linux_kernel≥ 5.7, < 5.10.112 | ≥ 5.11, < 5.15.35 | ≥ 5.16, < 5.17.4

3 vendors · 65 products

References

8 links