5.5

CVE-2022-3586: debian debian_linux Use After Free

Modified
AliasesUBUNTU-CVE-2022-3586DEBIAN-CVE-2022-3586
Published 19-10-2022Last modified 14-10-2026

Vulnerability summary

CVE-2022-3586 is a medium (CVSS 5.5) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · +0.01 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 57 · Related 54
DLA-3173-1MGASA-2022-0379MGASA-2022-0380SUSE-SU-2022:3897-1SUSE-SU-2022:3929-1SUSE-SU-2022:3930-1

Timeline

  1. 19-10-2022
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.48% 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.

Ubuntu84 products
  • linuxAll versions (No fix recorded) | < 4.4.0-240.274 | < 4.15.0-201.212 | < 5.4.0-136.153 | < 5.15.0-57.63
  • linux-aws< 4.4.0-1118.124 | < 4.4.0-1156.171 | < 4.15.0-1147.159 | < 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)
Debian2 products
Linux1 product
  • linux_kernel≥ 2.6.39, ≤ 5.19 | 6.0:rc1 | 6.0:rc2 | 6.0:rc3 | 6.0:rc4

3 vendors · 87 products

References

26 links
Show all 26 references