In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: Intel: hda: Fix UAF when reloading module hda_generic_machine_select() appends -idisp to the tplg filename by allocating a new string with devm_kasprintf(), then stores the string right back into the global variable snd_soc_acpi_intel_hda_machines. When the module is unloaded, this memory is freed, resulting in a global variable pointing to freed memory. Reloading the module then triggers a use-after-free: BUG: KFENCE: use-after-free read in string+0x48/0xe0 Use-after-free read at 0x00000000967e0109 (in kfence-#99): string+0x48/0xe0 vsnprintf+0x329/0x6e0 devm_kvasprintf+0x54/0xb0 devm_kasprintf+0x58/0x80 hda_machine_select.cold+0x198/0x17a2 [snd_sof_intel_hda_generic] sof_probe_work+0x7f/0x600 [snd_sof] process_one_work+0x17b/0x330 worker_thread+0x2ce/0x3f0 kthread+0xcf/0x100 ret_from_fork+0x31/0x50 ret_from_fork_asm+0x1a/0x30 kfence-#99: 0x00000000198a940f-0x00000000ace47d9d, size=64, cache=kmalloc-64 allocated by task 333 on cpu 8 at 17.798069s (130.453553s ago): devm_kmalloc+0x52/0x120 devm_kvasprintf+0x66/0xb0 devm_kasprintf+0x58/0x80 hda_machine_select.cold+0x198/0x17a2 [snd_sof_intel_hda_generic] sof_probe_work+0x7f/0x600 [snd_sof] process_one_work+0x17b/0x330 worker_thread+0x2ce/0x3f0 kthread+0xcf/0x100 ret_from_fork+0x31/0x50 ret_from_fork_asm+0x1a/0x30 freed by task 1543 on cpu 4 at 141.586686s (6.665010s ago): release_nodes+0x43/0xb0 devres_release_all+0x90/0xf0 device_unbind_cleanup+0xe/0x70 device_release_driver_internal+0x1c1/0x200 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x42/0xb0 __do_sys_delete_module+0x1d1/0x310 do_syscall_64+0x82/0x190 entry_SYSCALL_64_after_hwframe+0x76/0x7e Fix it by copying the match array with devm_kmemdup_array() before we modify it.
総合評価: CVE-2025-38056 は低リスク（33.1/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.16%、5 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.16% | +0.11% |
| 2 | 2026-04-14 | 0.02% | 0.05% | +0.03% |
| 3 | 2025-06-18 | — | 0.02% | — |
EPSS の全履歴 （全 3 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2025-38056 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-38056 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-38056 |
suse
|
medium | CVE-2025-38056 severity moderate: SUSE including 52 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 245 product×package rows across 47 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 15 SP7, … (47 product lines)): Known Not Affected 219, Fixed 26. | https://www.suse.com/security/cve/CVE-2025-38056/ |
ubuntu
|
medium | CVE-2025-38056 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, not-affected 150, ignored 148, released 106, needs-triage 2. | https://ubuntu.com/security/CVE-2025-38056 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.12, < 6.12.31 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.13, < 6.14.9 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:* |
| linux | linux_kernel | 6.15 | cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:* |