Vulnerability in Kernel (CVE-2022-49723)

Summary

Vulnerability in Kernel (CVE-2022-49723). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 5.10.124, 5.15.49, 5.18.6 or later.

Original description

The description as published by the source.

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

drm/i915/reset: Fix error_state_read ptr + offset use

Fix our pointer offset usage in error_state_read
when there is no i915_gpu_coredump but buf offset
is non-zero.

This fixes a kernel page fault can happen when
multiple tests are running concurrently in a loop
and one is producing engine resets and consuming
the i915 error_state dump while the other is
forcing full GT resets. (takes a while to trigger).

The dmesg call trace:

[ 5590.803000] BUG: unable to handle page fault for address:
ffffffffa0b0e000
[ 5590.803009] #PF: supervisor read access in kernel mode
[ 5590.803013] #PF: error_code(0x0000) - not-present page
[ 5590.803016] PGD 5814067 P4D 5814067 PUD 5815063 PMD 109de4067
PTE 0
[ 5590.803022] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 5590.803026] CPU: 5 PID: 13656 Comm: i915_hangman Tainted: G U
5.17.0-rc5-ups69-guc-err-capt-rev6+ #136
[ 5590.803033] Hardware name: Intel Corporation Alder Lake Client
Platform/AlderLake-M LP4x RVP, BIOS ADLPFWI1.R00.
3031.A02.2201171222 01/17/2022
[ 5590.803039] RIP: 0010:memcpy_erms+0x6/0x10
[ 5590.803045] Code: fe ff ff cc eb 1e 0f 1f 00 48 89 f8 48 89 d1
48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3
66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4
c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20
72 7e 40 38 f…

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-2022-49723 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 5.10.124, 5.15.49, 5.18.6 or later.
If unsure, ask your IT team or search "Kernel CVE-2022-49723" on the vendor's site.

CVE-2022-49723 (Kernel)
Patched: 5.10.124, 5.15.49, 5.18.6 — 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 5.10.124, 5.15.49, 5.18.6.

🛡️ 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 5.10.124, 5.15.49, 5.18.6
```
ステージング環境で 5.10.124, 5.15.49, 5.18.6 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":"5.0.0"},{"fixed":"5.10.124"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.49"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.18.6"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2022-49723 linux Fixed in: 5.10.127-1
Ubuntu UBUNTU-CVE-2022-49723 linux-hwe-edge