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-2025-38233 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-2025-38233" on the vendor's site.
CVE-2025-38233 (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, < 6.15.4 |
6.15.4 |
Fix status by distribution
Fixed packages published by each distribution for this CVE
- BellSoft Alpaquita BELL-CVE-2025-38233 linux-lts Fixed in: 6.18.35-r1
- Ubuntu UBUNTU-CVE-2025-38233 linux-hwe-edge
Original description The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
powerpc64/ftrace: fix clobbered r15 during livepatching
While r15 is clobbered always with PPC_FTRACE_OUT_OF_LINE, it is
not restored in livepatch sequence leading to not so obvious fails
like below:
BUG: Unable to handle kernel data access on write at 0xc0000000000f9078
Faulting instruction address: 0xc0000000018ff958
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP: c0000000018ff958 LR: c0000000018ff930 CTR: c0000000009c0790
REGS: c00000005f2e7790 TRAP: 0300 Tainted: G K (6.14.0+)
MSR: 8000000000009033 CR: 2822880b XER: 20040000
CFAR: c0000000008addc0 DAR: c0000000000f9078 DSISR: 0a000000 IRQMASK: 1
GPR00: c0000000018f2584 c00000005f2e7a30 c00000000280a900 c000000017ffa488
GPR04: 0000000000000008 0000000000000000 c0000000018f24fc 000000000000000d
GPR08: fffffffffffe0000 000000000000000d 0000000000000000 0000000000008000
GPR12: c0000000009c0790 c000000017ffa480 c00000005f2e7c78 c0000000000f9070
GPR16: c00000005f2e7c90 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 c00000005f3efa80 c00000005f2e7c60 c00000005f2e7c88
GPR24: c00000005f2e7c60 0000000000000001 c0000000000f9078 0000000000000000
GPR28: 00007fff97960000 c000000017ffa480 0000000000000000 c0000000000f9078
...
Call Trace:
check_heap_object+0x34/0x390 (unreliable)
__mutex_unlock_slowpath.isra.0+0xe4/0x230
seq_read_iter+0x430/0xa90
proc_reg_read_iter…
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