Vulnerability in Kernel (CVE-2025-37840)

Summary

Vulnerability in Kernel (CVE-2025-37840). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3 or later.

Original description

The description as published by the source.

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

mtd: rawnand: brcmnand: fix PM resume warning

Fixed warning on PM resume as shown below caused due to uninitialized
struct nand_operation that checks chip select field :
WARN_ON(op->cs >= nanddev_ntargets(&chip->base)

[ 14.588522] ------------[ cut here ]------------
[ 14.588529] WARNING: CPU: 0 PID: 1392 at drivers/mtd/nand/raw/internals.h:139 nand_reset_op+0x1e0/0x1f8
[ 14.588553] Modules linked in: bdc udc_core
[ 14.588579] CPU: 0 UID: 0 PID: 1392 Comm: rtcwake Tainted: G W 6.14.0-rc4-g5394eea10651 #16
[ 14.588590] Tainted: [W]=WARN
[ 14.588593] Hardware name: Broadcom STB (Flattened Device Tree)
[ 14.588598] Call trace:
[ 14.588604] dump_backtrace from show_stack+0x18/0x1c
[ 14.588622] r7:00000009 r6:0000008b r5:60000153 r4:c0fa558c
[ 14.588625] show_stack from dump_stack_lvl+0x70/0x7c
[ 14.588639] dump_stack_lvl from dump_stack+0x18/0x1c
[ 14.588653] r5:c08d40b0 r4:c1003cb0
[ 14.588656] dump_stack from __warn+0x84/0xe4
[ 14.588668] __warn from warn_slowpath_fmt+0x18c/0x194
[ 14.588678] r7:c08d40b0 r6:c1003cb0 r5:00000000 r4:00000000
[ 14.588681] warn_slowpath_fmt from nand_reset_op+0x1e0/0x1f8
[ 14.588695] r8:70c40dff r7:89705f41 r6:36b4a597 r5:c26c9444 r4:c26b0048
[ 14.588697] nand_reset_op from brcmnand_resume+0x13c/0x150
[ 14.588714] r9:00000000 r8:00000000 r7:c24f8010 r6:c228a3f8 r5:c26c94bc r4:c26b0040
[ 14.588717] brcmnand_resu…

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-2025-37840 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3 or later.
If unsure, ask your IT team or search "Kernel CVE-2025-37840" on the vendor's site.

CVE-2025-37840 (Kernel)
Patched: 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3 — 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 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3.

🛡️ 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 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3
```
ステージング環境で 5.4.293, 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12, 6.14.3 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":"4.16.0"},{"fixed":"5.4.293"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.237"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.181"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.135"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.88"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.24"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.13.12"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.14.0"},{"fixed":"6.14.3"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

BellSoft Alpaquita BELL-CVE-2025-37840 linux-lts Fixed in: 6.1.140-r0
Debian DEBIAN-CVE-2025-37840 linux Fixed in: 5.10.237-1
Ubuntu UBUNTU-CVE-2025-37840 linux-hwe-edge