4.3

CVE-2022-3646: Linux Kernel BPF segment.c nilfs_attach_log_writer memory leak

Modified
AliasesUBUNTU-CVE-2022-3646DEBIAN-CVE-2022-3646CGA-25w4-xchf-cc44
Published 21-10-2022Last modified 14-10-2026

Vulnerability summary

CVE-2022-3646 is a medium (CVSS 4.3) Improper Resource Shutdown or Release vulnerability in debian debian_linux. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 65.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.09%
0%100%
Low · +0.17 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 39 · Related 38
DLA-3173-1DLA-3245-1SUSE-SU-2022:3897-1SUSE-SU-2022:3929-1SUSE-SU-2022:3930-1SUSE-SU-2022:3998-1

Timeline

  1. 21-10-2022
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

1.09%

Chance of exploitation in the next 30 days

Percentile

65%

Versus all other CVEs

30-day change

Increase +0.17 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: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu85 products
  • linuxAll versions (No fix recorded) | < 4.4.0-239.273 | < 4.15.0-204.215 | < 5.4.0-136.153 | < 5.15.0-57.63
  • linux-aws< 4.4.0-1117.123 | < 4.4.0-1155.170 | < 4.15.0-1150.163 | < 5.4.0-1093.101 | < 5.15.0-1027.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
Chainguard83 products
  • hyperv-daemons-6.18All versions (No fix recorded)
  • hyperv-daemons-genericAll versions (No fix recorded)
  • linux-aws-6.12All versions (No fix recorded) | < 6.12.65-r0
  • linux-aws-6.12-boot-installedAll versions (No fix recorded)
  • linux-aws-6.12-fips-boot-installedAll versions (No fix recorded)
Debian2 products
Linux2 products

4 vendors · 172 products

References

33 links
Show all 33 references