Vulnerability in Linux kernel
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-2025-21730 has been found in Linux kernel.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2025-21730" on the vendor's site.
CVE-2025-21730 (Linux kernel) — CVSS v3 7.8
Attack vector: local / no user interaction
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.
A vulnerability (unclassified) exists in Linux kernel.
Check the vendor advisory for the affected versions of Linux kernel.
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Linux kernel を使っているサービスとバージョンを洗い出す。
-
2
Post-deployment verificationverify
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
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| Linux | Kernel |
≥ 6.13.0, < 6.13.2 |
6.13.2 |
Fix status by distribution
Fixed packages published by each distribution for this CVE
- BellSoft Alpaquita BELL-CVE-2025-21730 linux-lts Fixed in: 6.18.35-r1
- Debian DEBIAN-CVE-2025-21730 linux Fixed in: 6.12.13-1
- Ubuntu UBUNTU-CVE-2025-21730 linux
Original description The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw89: avoid to init mgnt_entry list twice when WoWLAN failed
If WoWLAN failed in resume flow, the rtw89_ops_add_interface() triggered
without removing the interface first. Then the mgnt_entry list init again,
causing the list_empty() check in rtw89_chanctx_ops_assign_vif()
useless, and list_add_tail() again. Therefore, we have added a check to
prevent double adding of the list.
rtw89_8852ce 0000:01:00.0: failed to check wow status disabled
rtw89_8852ce 0000:01:00.0: wow: failed to check disable fw ready
rtw89_8852ce 0000:01:00.0: wow: failed to swap to normal fw
rtw89_8852ce 0000:01:00.0: failed to disable wow
rtw89_8852ce 0000:01:00.0: failed to resume for wow -110
rtw89_8852ce 0000:01:00.0: MAC has already powered on
i2c_hid_acpi i2c-ILTK0001:00: PM: acpi_subsys_resume+0x0/0x60 returned 0 after 284705 usecs
list_add corruption. prev->next should be next (ffff9d9719d82228), but was ffff9d9719f96030. (prev=ffff9d9719f96030).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:34!
invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
CPU: 2 PID: 6918 Comm: kworker/u8:19 Tainted: G U O
Hardware name: Google Anraggar/Anraggar, BIOS Google_Anraggar.15217.514.0 03/25/2024
Workqueue: events_unbound async_run_entry_fn
RIP: 0010:__list_add_valid_or_report+0x9f/0xb0
Code: e8 56 89 ff ff 0f 0b 48 c7 c7 3e fc e0 96 48 89 c6 e8 45 89 ff ...
RSP: 0018:ffffa51b42bbbaf0 EFLAGS: 00010246
RAX: 00000000…
Source: NIST National Vulnerability Database NVD
References
- advisory github.com
- advisory nvd.nist.gov
- package git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org