Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2024-57949

Disclosure Date: February 09, 2025
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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

irqchip/gic-v3-its: Don’t enable interrupts in its_irq_set_vcpu_affinity()

The following call-chain leads to enabling interrupts in a nested interrupt
disabled section:

irq_set_vcpu_affinity()
irq_get_desc_lock()

 raw_spin_lock_irqsave()   <--- Disable interrupts

its_irq_set_vcpu_affinity()

 guard(raw_spinlock_irq)   <--- Enables interrupts when leaving the guard()

irq_put_desc_unlock() <—– Warns because interrupts are enabled

This was broken in commit b97e8a2f7130, which replaced the original
rawspin[un]lock() pair with guard(raw_spinlock_irq).

Fix the issue by using guard(raw_spinlock).

[ tglx: Massaged change log ]

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CVSS V3 Severity and Metrics
Base Score:
5.5 Medium
Impact Score:
3.6
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Technical Analysis