7.5

CVE-2022-4379: fedoraproject fedora Use After Free

Modified
AliasesSUSE-SU-2023:0273-1SUSE-SU-2023:0320-1UBUNTU-CVE-2022-4379
Published 10-01-2023Last modified 08-04-2025

Vulnerability summary

CVE-2022-4379 is a high (CVSS 7.5) Use After Free vulnerability in fedoraproject fedora. EPSS estimates a 6.63% chance of exploitation in the next 30 days, higher than 93.8% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 7% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
6.63%
0%100%
Low · +0.29 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 26 · Related 17
DLA-3404-1MGASA-2023-0148MGASA-2023-0149OPENSUSE-SU-2024:13704-1RHSA-2023:0951RHSA-2023:0979

Timeline

  1. 10-01-2023
    PublishedVulnerability first disclosed.
  2. 08-04-2025
    Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability was found in __nfs42_ssc_open() in fs/nfs/nfs4file.c in the Linux kernel. This flaw allows an attacker to conduct a remote denial

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

6.63%

Chance of exploitation in the next 30 days

Percentile

94%

Versus all other CVEs

30-day change

Increase +0.29 pp

From 6.35% 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: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu77 products
  • linux< 5.15.0-67.74
  • linux-aws< 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
Suse2 products
  • kernel-livepatch-SLE15-SP4_Update_6&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.1
  • kernel-livepatch-SLE15-SP4-RT_Update_1&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.1
Debian1 product
  • linux< 6.1.4-1
Fedoraproject1 product
Linux1 product
  • linux_kernel≥ 5.6, < 5.10.177 | ≥ 5.11, < 5.15.105 | ≥ 5.16, < 6.1.3
Opensuse1 product
  • kernel-source&distro=openSUSE Tumbleweed< 6.1.0-1.1

6 vendors · 83 products

References

28 links
Show all 28 references