Vulnerability in Kernel (CVE-2022-48688)

Summary

Vulnerability in Kernel (CVE-2022-48688). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 4.19.258, 5.4.213, 5.10.143, 5.15.68, 5.19.9 or later.

Original description

The description as published by the source.

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

i40e: Fix kernel crash during module removal

The driver incorrectly frees client instance and subsequent
i40e module removal leads to kernel crash.

Reproducer:

Do ethtool offline test followed immediately by another one
host# ethtool -t eth0 offline; ethtool -t eth0 offline
Remove recursively irdma module that also removes i40e module
host# modprobe -r irdma

Result:
[ 8675.035651] i40e 0000:3d:00.0 eno1: offline testing starting
[ 8675.193774] i40e 0000:3d:00.0 eno1: testing finished
[ 8675.201316] i40e 0000:3d:00.0 eno1: offline testing starting
[ 8675.358921] i40e 0000:3d:00.0 eno1: testing finished
[ 8675.496921] i40e 0000:3d:00.0: IRDMA hardware initialization FAILED init_state=2 status=-110
[ 8686.188955] i40e 0000:3d:00.1: i40e_ptp_stop: removed PHC on eno2
[ 8686.943890] i40e 0000:3d:00.1: Deleted LAN device PF1 bus=0x3d dev=0x00 func=0x01
[ 8686.952669] i40e 0000:3d:00.0: i40e_ptp_stop: removed PHC on eno1
[ 8687.761787] BUG: kernel NULL pointer dereference, address: 0000000000000030
[ 8687.768755] #PF: supervisor read access in kernel mode
[ 8687.773895] #PF: error_code(0x0000) - not-present page
[ 8687.779034] PGD 0 P4D 0
[ 8687.781575] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 8687.785935] CPU: 51 PID: 172891 Comm: rmmod Kdump: loaded Tainted: G W I 5.19.0+ #2
[ 8687.794800] Hardware name: Intel Corporation S2600WFD/S2600WFD, BIOS SE5C620.86B.0X.02.0001.051420190324 05/14/2019
[ 8…

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-2022-48688 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 4.19.258, 5.4.213, 5.10.143, 5.15.68, 5.19.9 or later.
If unsure, ask your IT team or search "Kernel CVE-2022-48688" on the vendor's site.

CVE-2022-48688 (Kernel)
Patched: 4.19.258, 5.4.213, 5.10.143, 5.15.68, 5.19.9 — 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 4.19.258, 5.4.213, 5.10.143, 5.15.68, 5.19.9.

🛡️ 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 4.19.258, 5.4.213, 5.10.143, 5.15.68, 5.19.9
```
ステージング環境で 4.19.258, 5.4.213, 5.10.143, 5.15.68, 5.19.9 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":"4.12.0"},{"fixed":"4.19.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.213"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.68"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.9"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-48688 linux Fixed in: 5.10.148-1
Ubuntu UBUNTU-CVE-2022-48688 linux-azure Fixed in: 4.15.0-1158.173~14.04.1