Bug 2326531 (CVE-2023-39180) - CVE-2023-39180 kernel: ksmbd: Read Request Memory Leak Denial-of-Service Vulnerability
Summary: CVE-2023-39180 kernel: ksmbd: Read Request Memory Leak Denial-of-Service Vuln...
Keywords:
Status: NEW
Alias: CVE-2023-39180
Product: Security Response
Classification: Other
Component: vulnerability-draft
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-11-15 17:07 UTC by OSIDB Bzimport
Modified: 2024-11-15 17:07 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
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.
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Description OSIDB Bzimport 2024-11-15 17:07:23 UTC 
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.

The specific flaw exists within the handling of SMB2_READ commands. The issue results from not releasing memory after its effective lifetime. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

Reference:
https://www.zerodayinitiative.com/advisories/ZDI-24-589/
Comment 1 Mauro Matteo Cascella 2024-11-15 17:07:46 UTC 
Upstream patch:
https://lore.kernel.org/lkml/20230813160006.1073695-11-sashal@kernel.org/
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