CVE-2026-99089— ASoC: samsung: i2s: enable op_clk in probe to balance runtime PM
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Linux 内核中，以下漏洞已被修复： ASoC：三星 I2S：在 probe 函数中启用 op_clk，以平衡运行时电源管理（runtime PM） probe 函数将设备置于运行时电源管理的活动状态，此时仅启用了"iis"总线时钟，但同时也将 priv->op_clk 设置为 RCLK_SRC 多路选择器的父时钟，却未实际启用该时钟。由于运行时电源管理的挂起（suspend）回调会禁用这两个时钟，因此在 probe 之后的第一次运行时挂起操作中，op_clk 被禁用的次数比其被启用的次数多了一次。 在 Ex
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-99089
Vulnerability Information
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Vulnerability Title
ASoC: samsung: i2s: enable op_clk in probe to balance runtime PM
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ASoC: samsung: i2s: enable op_clk in probe to balance runtime PM
The probe function puts the device into the runtime PM active state with
only the "iis" bus clock enabled, but it also sets priv->op_clk to the
parent of the RCLK_SRC mux without enabling it. The runtime PM suspend
callback disables both clocks, so the first runtime suspend after probe
disables op_clk once more than it was enabled.
On Exynos5250 Arndale both clocks resolve to the same EXYNOS_I2S_BUS gate,
so this triggers the following warning during boot:
WARNING: drivers/clk/clk.c:1270 at clk_core_disable+0xe4/0x23c, CPU#0: kworker/u8:3/45
i2s_bus already disabled
...
Workqueue: pm pm_runtime_work
Call trace:
...
clk_core_disable from clk_disable+0x28/0x34
clk_disable from i2s_runtime_suspend+0x58/0x68 [snd_soc_i2s]
i2s_runtime_suspend [snd_soc_i2s] from genpd_runtime_suspend+0xc4/0x298
genpd_runtime_suspend from __rpm_callback+0x48/0x18c
__rpm_callback from rpm_callback+0x4c/0x50
rpm_callback from rpm_suspend+0xf4/0x718
rpm_suspend from pm_runtime_work+0x9c/0xa0
...
Fix this by enabling op_clk in probe right after getting it, so the clock
state matches the runtime PM active state, and by disabling it in remove.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-99089
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|---|
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Patches & Fixes for CVE-2026-99089 (2)
Same Patch Batch · Linux · 2026-10-26 · 12 CVEs total
| CVE-2026-99099 | x86/CPU/AMD: Fix AMD TLBI Erratum #1718 | |
| CVE-2026-99097 | tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper() | |
| CVE-2026-99098 | dm-integrity: fix buffer overflow in inline mode with large tag size | |
| CVE-2026-99095 | drm/vc4: drain the hangcheck timer and works on V3D unbind | |
| CVE-2026-99096 | io_uring/register: don't exempt disabled rings from task restrictions | |
| CVE-2026-99094 | Bluetooth: btintel_pcie: fix TX descriptor bounds check | |
| CVE-2026-99093 | mm: don't schedule deferred kernel page table freeing while booting | |
| CVE-2026-99092 | riscv: patch: fix handling of bpf-jit execmem addresses | |
| CVE-2026-99090 | drm/amdgpu: serialize vblank counter reads against GPU reset | |
| CVE-2026-99091 | Bluetooth: MGMT: Fix status of pending commands flushed on power off | |
| CVE-2026-99088 | net: openvswitch: validate transport header presence in set_ipv6_addr |
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-99099
x86/CPU/AMD: Fix AMD TLBI Erratum #1718 -
CVE-2026-99097
tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc -
CVE-2026-99098
dm-integrity: fix buffer overflow in inline mode with large -
CVE-2026-99095
drm/vc4: drain the hangcheck timer and works on V3D unbind -
CVE-2026-99096
io_uring/register: don't exempt disabled rings from task res
Same vendor: Linux
-
CVE-2026-99099
x86/CPU/AMD: Fix AMD TLBI Erratum #1718 -
CVE-2026-99097
tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc -
CVE-2026-99098
dm-integrity: fix buffer overflow in inline mode with large -
CVE-2026-99095
drm/vc4: drain the hangcheck timer and works on V3D unbind -
CVE-2026-99096
io_uring/register: don't exempt disabled rings from task res