CVE-2022-49118

scsi: hisi_sas: Free irq vectors in order for v3 HW

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: hisi_sas: Free irq vectors in order for v3 HW If the driver probe fails to request the channel IRQ or fatal IRQ, the driver will free the IRQ vectors before freeing the IRQs in free_irq(), and this will cause a kernel BUG like this: ------------[ cut here ]------------ kernel BUG at drivers/pci/msi.c:369! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Call trace: free_msi_irqs+0x118/0x13c pci_disable_msi+0xfc/0x120 pci_free_irq_vectors+0x24/0x3c hisi_sas_v3_probe+0x360/0x9d0 [hisi_sas_v3_hw] local_pci_probe+0x44/0xb0 work_for_cpu_fn+0x20/0x34 process_one_work+0x1d0/0x340 worker_thread+0x2e0/0x460 kthread+0x180/0x190 ret_from_fork+0x10/0x20 ---[ end trace b88990335b610c11 ]--- So we use devm_add_action() to control the order in which we free the vectors.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/224903cc60d045576393c3b16907742f23e6c740
https://git.kernel.org/stable/c/f05a0d8de2ea49af36821a20b0b501e20ced937e
https://git.kernel.org/stable/c/8b6eab9d683bae7f88dc894b8c851f866032301c
https://git.kernel.org/stable/c/b4cc04fa8f1fc3816c8494d77abab3f72b9d2292
https://git.kernel.org/stable/c/554fb72ee34f4732c7f694f56c3c6e67790352a0

Frequently Asked Questions

What is the severity of CVE-2022-49118?: CVE-2022-49118 has not yet been assigned a CVSS score.
How to fix CVE-2022-49118?: To fix CVE-2022-49118, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49118 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49118 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49118?: CVE-2022-49118 affects Linux Linux, Linux Linux.

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