CVE-2026-64145 (GCVE-0-2026-64145)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
wifi: wilc1000: fix dma_buffer leak on bus acquire failure
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix dma_buffer leak on bus acquire failure wilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at the top of the function and uses a 'fail:' label to free it via kfree(dma_buffer) on error. All later error paths correctly use 'goto fail' to route through this cleanup. However, the early failure path after the first acquire_bus() call uses a bare 'return ret;', which leaks dma_buffer whenever the bus acquire fails. Replace the early return with goto fail so the existing cleanup path runs. Found via a custom Coccinelle semantic patch hunting for kmalloc'd locals leaked on early-return error paths in driver firmware-download code.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1241c5650ff7a0236cebb89acca8aade48839fd6 , < 95c82d498d74c4e587db30021ca1aec90e29b5a5 (git)
Affected: 1241c5650ff7a0236cebb89acca8aade48839fd6 , < 32d7584441b9ecb279a03653b432612546e5efbe (git)
Affected: 1241c5650ff7a0236cebb89acca8aade48839fd6 , < dd7b6a8671939708cc4b7a46786d8c11297e8f69 (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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            "drivers/net/wireless/microchip/wilc1000/wlan.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: fix dma_buffer leak on bus acquire failure\n\nwilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at\nthe top of the function and uses a \u0027fail:\u0027 label to free it via\nkfree(dma_buffer) on error.\n\nAll later error paths correctly use \u0027goto fail\u0027 to route through this\ncleanup. However, the early failure path after the first acquire_bus()\ncall uses a bare \u0027return ret;\u0027, which leaks dma_buffer whenever the bus\nacquire fails.\n\nReplace the early return with goto fail so the existing cleanup path\nruns.\n\nFound via a custom Coccinelle semantic patch hunting for kmalloc\u0027d\nlocals leaked on early-return error paths in driver firmware-download\ncode."
        }
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    "dateReserved": "2026-07-19T07:54:57.037Z",
    "dateUpdated": "2026-07-19T15:40:36.767Z",
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      "cve": "CVE-2026-64145",
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      "initial_release_date": "2026-07-21T12:58:52Z",
      "source": "SUSE CSAF VEX",
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      "title": "SUSE CVE CVE-2026-64145",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64145.json",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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