FKIE_CVE-2025-38313

Vulnerability from fkie_nvd - Published: 2025-07-10 08:15 - Updated: 2025-12-19 16:44
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix double-free on mc_dev The blamed commit tried to simplify how the deallocations are done but, in the process, introduced a double-free on the mc_dev variable. In case the MC device is a DPRC, a new mc_bus is allocated and the mc_dev variable is just a reference to one of its fields. In this circumstance, on the error path only the mc_bus should be freed. This commit introduces back the following checkpatch warning which is a false-positive. WARNING: kfree(NULL) is safe and this check is probably not required + if (mc_bus) + kfree(mc_bus);
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12e4431e5078847791936820bd39df9e1ee26d2ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d5baab39e5b09a76870b345cdee7933871b881fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3135e03a92f6b5259d0a7f25f728e9e7866ede3fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4b23c46eb2d88924b93aca647bde9a4b9cf62cf9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7002b954c4a8b9965ba0f139812ee4a6f71beac8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/873d47114fd5e5a1cad2018843671537cc71ac84Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2057374f326303c86d8423415ab58656eebc695Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d694bf8a9acdbd061596f3e7549bc8cb70750a60Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
debian debian_linux 11.0
To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: fsl-mc: fix double-free on mc_dev\n\nThe blamed commit tried to simplify how the deallocations are done but,\nin the process, introduced a double-free on the mc_dev variable.\n\nIn case the MC device is a DPRC, a new mc_bus is allocated and the\nmc_dev variable is just a reference to one of its fields. In this\ncircumstance, on the error path only the mc_bus should be freed.\n\nThis commit introduces back the following checkpatch warning which is a\nfalse-positive.\n\nWARNING: kfree(NULL) is safe and this check is probably not required\n+       if (mc_bus)\n+               kfree(mc_bus);"
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  "id": "CVE-2025-38313",
  "lastModified": "2025-12-19T16:44:23.293",
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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