Improper Input Validation Affecting kernel-rt-doc package, versions *
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Start learning- Snyk IDSNYK-CENTOS7-KERNELRTDOC-8854794
- published28 Feb 2025
- disclosed26 Feb 2025
Introduced: 26 Feb 2025
CVE-2022-49146 (opens in a new tab)How to fix?
There is no fixed version for Centos:7 kernel-rt-doc.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-doc package and not the kernel-rt-doc package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
virtio: use virtio_device_ready() in virtio_device_restore()
After waking up a suspended VM, the kernel prints the following trace for virtio drivers which do not directly call virtio_device_ready() in the .restore:
PM: suspend exit
irq 22: nobody cared (try booting with the "irqpoll" option)
Call Trace:
<IRQ>
dump_stack_lvl+0x38/0x49
dump_stack+0x10/0x12
__report_bad_irq+0x3a/0xaf
note_interrupt.cold+0xb/0x60
handle_irq_event+0x71/0x80
handle_fasteoi_irq+0x95/0x1e0
__common_interrupt+0x6b/0x110
common_interrupt+0x63/0xe0
asm_common_interrupt+0x1e/0x40
? __do_softirq+0x75/0x2f3
irq_exit_rcu+0x93/0xe0
sysvec_apic_timer_interrupt+0xac/0xd0
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x12/0x20
arch_cpu_idle+0x12/0x20
default_idle_call+0x39/0xf0
do_idle+0x1b5/0x210
cpu_startup_entry+0x20/0x30
start_secondary+0xf3/0x100
secondary_startup_64_no_verify+0xc3/0xcb
</TASK>
handlers:
[<000000008f9bac49>] vp_interrupt
[<000000008f9bac49>] vp_interrupt
Disabling IRQ #22
This happens because we don't invoke .enable_cbs callback in virtio_device_restore(). That callback is used by some transports (e.g. virtio-pci) to enable interrupts.
Let's fix it, by calling virtio_device_ready() as we do in virtio_dev_probe(). This function calls .enable_cts callback and sets DRIVER_OK status bit.
This fix also avoids setting DRIVER_OK twice for those drivers that call virtio_device_ready() in the .restore.