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CVE-2026-46255 (GCVE-0-2026-46255)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:49 – Updated: 2026-06-03 15:49
VLAI
Title
dmaengine: fsl-edma: don't explicitly disable clocks in .remove()
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().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a9903de3aa16731846bf924342eca44bdabe9be6 , < 533d495f15e4c88ad5246c7f90ae026702e28d75 (git)
Affected: a9903de3aa16731846bf924342eca44bdabe9be6 , < 68feac21bd4de7ae4faba05704c404861d991fcf (git)
Affected: a9903de3aa16731846bf924342eca44bdabe9be6 , < bda244871179543dd3be7d093236cb33b2fb1765 (git)
Affected: a9903de3aa16731846bf924342eca44bdabe9be6 , < b84dba68c4823da452cec99a5d213571a65d06de (git)
Affected: a9903de3aa16731846bf924342eca44bdabe9be6 , < 666c53e94c1d0bf0bdf14c49505ece9ddbe725bc (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: fsl-edma: don\u0027t explicitly disable clocks in .remove()\n\nThe clocks in fsl_edma_engine::muxclk are allocated and enabled with\ndevm_clk_get_enabled(), which automatically cleans these resources up,\nbut these clocks are also manually disabled in fsl_edma_remove(). This\ncauses warnings on driver removal for each clock:\n\n        edma_module already disabled\n        WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8\n        [...]\n        Call trace:\n         clk_core_disable+0x198/0x1c8 (P)\n         clk_disable+0x34/0x58\n         fsl_edma_remove+0x74/0xe8 [fsl_edma]\n         [...]\n        ---[ end trace 0000000000000000 ]---\n        edma_module already unprepared\n        WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220\n        [...]\n        Call trace:\n         clk_core_unprepare+0x1f8/0x220 (P)\n         clk_unprepare+0x34/0x58\n         fsl_edma_remove+0x7c/0xe8 [fsl_edma]\n         [...]\n        ---[ end trace 0000000000000000 ]---\n\nFix these warnings by removing the unnecessary fsl_disable_clocks() call\nin fsl_edma_remove()."
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46255\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-03T18:16:26.463\",\"lastModified\":\"2026-07-22T20:10:00.127\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndmaengine: fsl-edma: don\u0027t explicitly disable clocks in .remove()\\n\\nThe clocks in fsl_edma_engine::muxclk are allocated and enabled with\\ndevm_clk_get_enabled(), which automatically cleans these resources up,\\nbut these clocks are also manually disabled in fsl_edma_remove(). This\\ncauses warnings on driver removal for each clock:\\n\\n        edma_module already disabled\\n        WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8\\n        [...]\\n        Call trace:\\n         clk_core_disable+0x198/0x1c8 (P)\\n         clk_disable+0x34/0x58\\n         fsl_edma_remove+0x74/0xe8 [fsl_edma]\\n         [...]\\n        ---[ end trace 0000000000000000 ]---\\n        edma_module already unprepared\\n        WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220\\n        [...]\\n        Call trace:\\n         clk_core_unprepare+0x1f8/0x220 (P)\\n         clk_unprepare+0x34/0x58\\n         fsl_edma_remove+0x7c/0xe8 [fsl_edma]\\n         [...]\\n        ---[ end trace 0000000000000000 ]---\\n\\nFix these warnings by removing the unnecessary fsl_disable_clocks() call\\nin fsl_edma_remove().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\ndmaengine: fsl-edma: no deshabilitar expl\u00edcitamente los relojes en .remove()\\n\\nLos relojes en fsl_edma_engine::muxclk se asignan y habilitan con\\ndevm_clk_get_enabled(), lo que autom\u00e1ticamente libera estos recursos,\\npero estos relojes tambi\u00e9n se deshabilitan manualmente en fsl_edma_remove(). Esto\\ncausa advertencias al eliminar el controlador para cada reloj:\\n\\n        edma_module ya deshabilitado\\n        ADVERTENCIA: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8\\n        [...]\\n        Traza de llamada:\\n         clk_core_disable+0x198/0x1c8 (P)\\n         clk_disable+0x34/0x58\\n         fsl_edma_remove+0x74/0xe8 [fsl_edma]\\n         [...]\\n        ---[ fin de la traza 0000000000000000 ]---\\n        edma_module ya no preparado\\n        ADVERTENCIA: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220\\n        [...]\\n        Traza de llamada:\\n         clk_core_unprepare+0x1f8/0x220 (P)\\n         clk_unprepare+0x34/0x58\\n         fsl_edma_remove+0x7c/0xe8 [fsl_edma]\\n         [...]\\n        ---[ fin de la traza 0000000000000000 ]---\\n\\nSolucionar estas advertencias eliminando la llamada innecesaria a fsl_disable_clocks()\\nen 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:41:49+00:00",
      "cve": "CVE-2026-46255",
      "id": "CVE-2026-46255",
      "initial_release_date": "2026-06-03T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: dmaengine: fsl-edma: don\u0027t explicitly disable clocks in .remove()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46255.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T16:53:32Z",
      "cve": "CVE-2026-46255",
      "id": "CVE-2026-46255",
      "initial_release_date": "2026-06-04T02:21:52Z",
      "product_status:first_fixed": "2",
      "product_status:known_not_affected": "385",
      "product_status:recommended": "145",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46255",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46255.json",
      "version": "6"
    }
  }
}



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