7.5

CVE-2023-39180: Kernel: ksmbd: read request memory leak denial-of-service vulnerability

Analyzed
AliasesUBUNTU-CVE-2023-39180DEBIAN-CVE-2023-39180CGA-22p5-9jrr-hcfp
Published 18-11-2024Last modified 18-11-2024

Vulnerability summary

CVE-2023-39180 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in linux linux_kernel. EPSS estimates a 1.44% chance of exploitation in the next 30 days, higher than 73.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.44%
0%100%
Low · 0.00 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 0 · Related 6
CGA-3R7W-W8VM-C6V5CGA-728H-VF3G-82GWCGA-HHV8-CV6H-FC5JCGA-PX5C-QJ86-4M24CGA-R6GW-9WF2-7J57CGA-XG9Q-G42M-93G2

Timeline

  1. 18-11-2024
    PublishedVulnerability first disclosed.
  2. 18-11-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found within the handling of SMB2_READ commands in the kernel ksmbd module. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this to create a denial-of-service condition on affected installations of Linux. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.44%

Chance of exploitation in the next 30 days

Percentile

73%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.44% 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.

Ubuntu112 products
  • linuxAll versions (No fix recorded) | < 5.15.0-94.104
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1053.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard87 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)
Debian1 product
  • linux< 6.1.55-1 | < 6.5.3-1

3 vendors · 200 products · Showing 200 of 206

References

7 links