Out-of-Bounds Write in Linux kernel (CVE-2025-38662)
Summary
Out-of-bounds write in Linux kernel (CVE-2025-38662). Confidential information can be exposed externally.
Original description
The description as published by the source.
In the Linux kernel, the following vulnerability has been resolved:
ASoC: mediatek: mt8365-dai-i2s: pass correct size to mt8365_dai_set_priv
Given mt8365_dai_set_priv allocate priv_size space to copy priv_data which
means we should pass mt8365_i2s_priv[i] or "struct mtk_afe_i2s_priv"
instead of afe_priv which has the size of "struct mt8365_afe_private".
Otherwise the KASAN complains about.
[ 59.389765] BUG: KASAN: global-out-of-bounds in mt8365_dai_set_priv+0xc8/0x168 [snd_soc_mt8365_pcm]
...
[ 59.394789] Call trace:
[ 59.395167] dump_backtrace+0xa0/0x128
[ 59.395733] show_stack+0x20/0x38
[ 59.396238] dump_stack_lvl+0xe8/0x148
[ 59.396806] print_report+0x37c/0x5e0
[ 59.397358] kasan_report+0xac/0xf8
[ 59.397885] kasan_check_range+0xe8/0x190
[ 59.398485] asan_memcpy+0x3c/0x98
[ 59.399022] mt8365_dai_set_priv+0xc8/0x168 [snd_soc_mt8365_pcm]
[ 59.399928] mt8365_dai_i2s_register+0x1e8/0x2b0 [snd_soc_mt8365_pcm]
[ 59.400893] mt8365_afe_pcm_dev_probe+0x4d0/0xdf0 [snd_soc_mt8365_pcm]
[ 59.401873] platform_probe+0xcc/0x228
[ 59.402442] really_probe+0x340/0x9e8
[ 59.402992] driver_probe_device+0x16c/0x3f8
[ 59.403638] driver_probe_device+0x64/0x1d8
[ 59.404256] driver_attach+0x1dc/0x4c8
[ 59.404840] bus_for_each_dev+0x100/0x190
[ 59.405442] driver_attach+0x44/0x68
[ 59.405980] bus_add_driver+0x23c/0x500
[ 59.406550] driver_register+0xf8/0x3d0
[ 59.407122] platform_driver_register+0x68/0x98
[ 59.407810] mt8365_afe_p…
Source: NIST National Vulnerability Database NVD
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-2025-38662 has been found in Linux kernel.
Confidential information can be exposed externally. CVSS score: 7.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Linux kernel CVE-2025-38662" on the vendor's site.
CVE-2025-38662 (Linux kernel) — CWE-787 / CVSS v3 7.1
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.
Out-of-bounds write (CWE-787) exists in Linux kernel.
Check the vendor advisory for the affected versions of Linux kernel.
Severity: High (CVSS 7.1/10). Confidential information can be exposed externally.
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
-
1Identify exposure identify
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。
-
2Post-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
Fix status by distribution
Fixed packages published by each distribution for this CVE
- BellSoft Alpaquita BELL-CVE-2025-38662 linux-lts Fixed in: 6.12.41-r0
- Debian DEBIAN-CVE-2025-38662 linux Fixed in: 6.12.41-1
- Ubuntu UBUNTU-CVE-2025-38662 linux-hwe-edge
References
- advisory github.com
- advisory nvd.nist.gov
- package git.kernel.org
- web git.kernel.org
- web git.kernel.org
- web git.kernel.org