Vulnerability in Kernel (CVE-2022-49146)

Summary

Vulnerability in Kernel (CVE-2022-49146). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 5.16.19, 5.17.2 or later.

Original description

The description as published by the source.

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:
 
 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
 
 
 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
 
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 a…

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2022-49146 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 5.16.19, 5.17.2 or later.
If unsure, ask your IT team or search "Kernel CVE-2022-49146" on the vendor's site.

CVE-2022-49146 (Kernel)
Patched: 5.16.19, 5.17.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Kernel.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 5.16.19, 5.17.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Kernel' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'Kernel' . | grep -v node_modules
```
リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で Kernel を grep し、稼働しているサービス・バージョンを把握する。
2
Apply patch patch
```
Upgrade Kernel to 5.16.19, 5.17.2
```
ステージング環境で 5.16.19, 5.17.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
3
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.16.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.17.0"},{"fixed":"5.17.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-49146 linux Fixed in: 5.17.3-1