CVE-2023-4133: fedoraproject fedora Use After Free
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-4133DEBIAN-CVE-2023-4133
Published 03-08-2023Last modified 06-11-2025
Vulnerability summary
CVE-2023-4133 is a medium (CVSS 5.5) Use After Free vulnerability in fedoraproject fedora. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.4% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.22%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 20 · Related 17RHSA-2024:2394RHSA-2024:2950RHSA-2024:3138SUSE-SU-2023:3390-1SUSE-SU-2023:3392-1SUSE-SU-2023:3599-1SUSE-SU-2023:3599-2SUSE-SU-2023:3600-1SUSE-SU-2023:3600-2SUSE-SU-2023:3601-1SUSE-SU-2023:3656-1SUSE-SU-2023:3681-1SUSE-SU-2023:3682-1SUSE-SU-2023:3684-1SUSE-SU-2023:3705-1SUSE-SU-2023:3785-1SUSE-SU-2023:3964-1SUSE-SU-2023:3969-1SUSE-SU-2023:3971-1SUSE-SU-2023:3988-1
Timeline
- 03-08-2023PublishedVulnerability first disclosed.
- 06-11-2025Last modifiedVulnerability information updated.
Description
A use-after-free vulnerability was found in the cxgb4 driver in the Linux kernel. The bug occurs when the cxgb4 device is detaching due to a possible rearming of the flower_stats_timer from the work queue. This flaw allows a local user to crash the system, causing a denial of service condition.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 5.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
-0.01 pp
From 0.23% on 21-09-2026
21-09-202621-10-2026
EPSS score0.22%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu100 products
- linuxAll versions (No fix recorded)
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linuxAll versions (No fix recorded) | < 6.3.7-1
Fedoraproject1 product
- fedorana
Linux1 product
- linux_kernel< 6.3
Redhat1 product
- enterprise_linux8.0 | 9.0
5 vendors · 104 products
