IM
IronMonkey Threat Research

CVE-2025-21791 HIGH

Published: 2025-02-27 | Last Modified: 2025-11-03 | Status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.

Additional Descriptions (1)

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vrf: usar protección RCU en l3mdev_l3_out() l3mdev_l3_out() se puede llamar sin que se retenga RCU: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Agregue el par rcu_read_lock() / rcu_read_unlock() para evitar un posible UAF.

CVSS Metrics

Base Score: 7.8 (HIGH)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactHIGH
Integrity ImpactHIGH
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 5.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-416
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-416

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7fd36afa5580> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd369ee8280> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd36aad3640> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7fd2dbcaa200> Operating System
linux linux_kernel 6.14 <built-in method update of dict object at 0x7fd36afa5780> Operating System
linux linux_kernel 6.14 <built-in method update of dict object at 0x7fd36afa5700> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*

References