Vulnerability in Kernel (CVE-2022-50133)

Summary

Vulnerability in Kernel (CVE-2022-50133). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 5.19.2 or later.

Original description

The description as published by the source.

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

usb: xhci_plat_remove: avoid NULL dereference

Since commit 4736ebd7fcaff1eb8481c140ba494962847d6e0a ("usb: host:
xhci-plat: omit shared hcd if either root hub has no ports")
xhci->shared_hcd can be NULL, which causes the following Oops
on reboot:

[ 710.124450] systemd-shutdown[1]: Rebooting.
[ 710.298861] xhci-hcd xhci-hcd.2.auto: remove, state 4
[ 710.304217] usb usb3: USB disconnect, device number 1
[ 710.317441] xhci-hcd xhci-hcd.2.auto: USB bus 3 deregistered
[ 710.323280] xhci-hcd xhci-hcd.2.auto: remove, state 1
[ 710.328401] usb usb2: USB disconnect, device number 1
[ 710.333515] usb 2-3: USB disconnect, device number 2
[ 710.467649] xhci-hcd xhci-hcd.2.auto: USB bus 2 deregistered
[ 710.475450] Unable to handle kernel NULL pointer dereference at virtual address 00000000000003b8
[ 710.484425] Mem abort info:
[ 710.487265] ESR = 0x0000000096000004
[ 710.491060] EC = 0x25: DABT (current EL), IL = 32 bits
[ 710.496427] SET = 0, FnV = 0
[ 710.499525] EA = 0, S1PTW = 0
[ 710.502716] FSC = 0x04: level 0 translation fault
[ 710.507648] Data abort info:
[ 710.510577] ISV = 0, ISS = 0x00000004
[ 710.514462] CM = 0, WnR = 0
[ 710.517480] user pgtable: 4k pages, 48-bit VAs, pgdp=00000008b0050000
[ 710.523976] [00000000000003b8] pgd=0000000000000000, p4d=0000000000000000
[ 710.530961] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[ 710.536551] Modules linked in: rfkill inpu…

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-2022-50133 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 5.19.2 or later.
If unsure, ask your IT team or search "Kernel CVE-2022-50133" on the vendor's site.

CVE-2022-50133 (Kernel)
Patched: 5.19.2 — 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 5.19.2.

🛡️ 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 5.19.2
```
ステージング環境で 5.19.2 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":"5.19.0"},{"fixed":"5.19.2"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-50133 linux Fixed in: 6.0.2-1