Vulnerability in Kernel (CVE-2023-53529)

Summary

Vulnerability in Kernel (CVE-2023-53529). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 6.3.4 or later.

Original description

The description as published by the source.

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

wifi: rtw88: Fix memory leak in rtw88_usb

Kmemleak shows the following leak arising from routine in the usb
probe routine:

unreferenced object 0xffff895cb29bba00 (size 512):
comm "(udev-worker)", pid 534, jiffies 4294903932 (age 102751.088s)
hex dump (first 32 bytes):
77 30 30 30 00 00 00 00 02 2f 2d 2b 30 00 00 00 w000...../-+0...
02 00 2a 28 00 00 00 00 ff 55 ff ff ff 00 00 00 ..*(.....U......
backtrace:
[] kmalloc_trace+0x26/0x90
[] rtw_usb_probe+0x2f1/0x680 [rtw_usb]
[] usb_probe_interface+0xdd/0x2e0 [usbcore]
[] really_probe+0x18e/0x3d0
[] __driver_probe_device+0x78/0x160
[] driver_probe_device+0x1f/0x90
[] __driver_attach+0xbf/0x1b0
[] bus_for_each_dev+0x70/0xc0
[] bus_add_driver+0x10e/0x210
[] driver_register+0x55/0xf0
[] usb_register_driver+0x88/0x140 [usbcore]
[] do_one_initcall+0x43/0x210
[] do_init_module+0x4a/0x200
[] __do_sys_finit_module+0xac/0x120
[] do_syscall_64+0x56/0x80
[] entry_SYSCALL_64_after_hwframe+0x46/0xb0

The leak was verified to be real by unloading the driver, which resulted
in a dangling pointer to the allocation.

The allocated memory is freed in rtw_usb_intf_deinit().

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-2023-53529 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 6.3.4 or later.
If unsure, ask your IT team or search "Kernel CVE-2023-53529" on the vendor's site.

CVE-2023-53529 (Kernel)
Patched: 6.3.4 — 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 6.3.4.

🛡️ 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 6.3.4
```
ステージング環境で 6.3.4 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":"5.2.0"},{"fixed":"6.3.4"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2023-53529 linux
Ubuntu UBUNTU-CVE-2023-53529 linux