CVE-2024-50111

/// Technical description

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

LoongArch: Enable IRQ if do_ale() triggered in irq-enabled context

Unaligned access exception can be triggered in irq-enabled context such

as user mode, in this case do_ale() may call get_user() which may cause

sleep. Then we will get:

BUG: sleeping function called from invalid context at arch/loongarch/kernel/access-helper.h:7

in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 129, name: modprobe

preempt_count: 0, expected: 0

RCU nest depth: 0, expected: 0

CPU: 0 UID: 0 PID: 129 Comm: modprobe Tainted: G W 6.12.0-rc1+ #1723

Tainted: [W]=WARN

Stack : 9000000105e0bd48 0000000000000000 9000000003803944 9000000105e08000

9000000105e0bc70 9000000105e0bc78 0000000000000000 0000000000000000

9000000105e0bc78 0000000000000001 9000000185e0ba07 9000000105e0b890

ffffffffffffffff 9000000105e0bc78 73924b81763be05b 9000000100194500

000000000000020c 000000000000000a 000

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References