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CVE-2026-99089unknown

ASoC: samsung: i2s: enable op_clk in probe to balance runtime PM

Impact

In the Linux kernel, the following vulnerability has been resolved:

Source excerpt · Linux

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Linux · Linux

Other versions: unaffected

Version / rangeSource status
48279c53fd1d09dc0d1b6ebb9f21732c507cea0b to before 2c64c30d493d82d5edc95811cede0083e1195822affected
48279c53fd1d09dc0d1b6ebb9f21732c507cea0b to before 5dac6bf09b5a4fff2433629801309c3884c3e94aaffected
48279c53fd1d09dc0d1b6ebb9f21732c507cea0b to before 64bb35079dcbc67901da1fe8c52c234cbcd17df3affected
48279c53fd1d09dc0d1b6ebb9f21732c507cea0b to before a728c12f8bd89947894e227d0f4f83a895ac9ab7affected
48279c53fd1d09dc0d1b6ebb9f21732c507cea0b to before 7529254014764ae0b8c33d5c61a58f36c65b1a1caffected
Linux version evidence

Linux · Linux

Other versions: affected

Version / rangeSource status
4.17affected
0 to before 4.17unaffected
6.6.160 through 6.6.* (inclusive)unaffected
6.12.113 through 6.12.* (inclusive)unaffected
6.18.57 through 6.18.* (inclusive)unaffected
7.2.11 through 7.2.* (inclusive)unaffected
7.3 through * (inclusive)unaffected
Linux version evidence

Original source 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.

References