CVE-2024-50086

ksmbd: fix user-after-free from session log off

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix user-after-free from session log off

There is racy issue between smb2 session log off and smb2 session setup.
It will cause user-after-free from session log off.
This add session_lock when setting SMB2_SESSION_EXPIRED and referece
count to session struct not to free session while it is being used.

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2024-10-21 CVE Reserved
2024-10-29 CVE Published
2024-10-31 EPSS Updated
2024-11-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/0f62358ce85b2d4c949ef1b648be01b29cec667a	2024-11-08
https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c	2024-10-22
https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08	2024-10-22
https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d	2024-10-22
https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930	2024-10-10

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.171 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.171"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.114 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.114"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.58 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.58"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.11.5 Search vendor "Linux" for product "Linux Kernel" and version " < 6.11.5"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.12 Search vendor "Linux" for product "Linux Kernel" and version " < 6.12"		en		Affected