CVE-2026-46255

Summary

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

dmaengine: fsl-edma: don't explicitly disable clocks in .remove()

The clocks in fsl_edma_engine::muxclk are allocated and enabled with devm_clk_get_enabled(), which automatically cleans these resources up, but these clocks are also manually disabled in fsl_edma_remove(). This causes warnings on driver removal for each clock:

    edma_module already disabled
    WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8
    [...]
    Call trace:
     clk_core_disable+0x198/0x1c8 (P)
     clk_disable+0x34/0x58
     fsl_edma_remove+0x74/0xe8 [fsl_edma]
     [...]
    ---[ end trace 0000000000000000 ]---
    edma_module already unprepared
    WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220
    [...]
    Call trace:
     clk_core_unprepare+0x1f8/0x220 (P)
     clk_unprepare+0x34/0x58
     fsl_edma_remove+0x7c/0xe8 [fsl_edma]
     [...]
    ---[ end trace 0000000000000000 ]---

Fix these warnings by removing the unnecessary fsl_disable_clocks() call in fsl_edma_remove().

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/533d495f15e4c88ad5246c7f90ae026702e28d75
• https://git.kernel.org/stable/c/68feac21bd4de7ae4faba05704c404861d991fcf
• https://git.kernel.org/stable/c/bda244871179543dd3be7d093236cb33b2fb1765
• https://git.kernel.org/stable/c/b84dba68c4823da452cec99a5d213571a65d06de
• https://git.kernel.org/stable/c/666c53e94c1d0bf0bdf14c49505ece9ddbe725bc

• ←Previous
• Next→