CVE-2024-35864

smb: client: fix potential UAF in smb2_is_valid_lease_break()

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

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

smb: client: fix potential UAF in smb2_is_valid_lease_break()

Skip sessions that are being teared down (status == SES_EXITING) to
avoid UAF.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: cliente: corrige UAF potencial en smb2_is_valid_lease_break() Omita las sesiones que se están eliminando (estado == SES_EXITING) para evitar UAF.

A use-after-free flaw was found in the Linux kernel in smb smb2_is_valid_lease_break() when exiting a session. This flaw allows a local attacker to crash the system.

*Credits: N/A

CVSS Scores

Red Hatv3.1 5.5

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2024-05-17 CVE Reserved
2024-05-19 CVE Published
2024-05-20 EPSS Updated
2024-11-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (6)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/c868cabdf6fdd61bea54532271f4708254e57fc5	2024-04-10
https://git.kernel.org/stable/c/f92739fdd4522c4291277136399353d7c341fae4	2024-04-10
https://git.kernel.org/stable/c/a8344e2b69bde63f713b0aa796d70dbeadffddfb	2024-04-10
https://git.kernel.org/stable/c/705c76fbf726c7a2f6ff9143d4013b18daaaebf1	2024-04-03

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-35864	2024-11-12
https://bugzilla.redhat.com/show_bug.cgi?id=2281769	2024-11-12

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"				< 6.1.85 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.85"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.26 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.26"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.8.5 Search vendor "Linux" for product "Linux Kernel" and version " < 6.8.5"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.9 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9"		en		Affected