CVE-2026-93163 (GCVE-0-2026-93163)
Vulnerability from cvelistv5
Published
2026-09-17 16:11
Modified
2026-10-21 12:52
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: hwrng: core - fix rng list on registration error hwrng_register(rng) does the following: 1. Checks if rng has name and read methods set 2. Checks if the name already exists 3. Adds rng to global rng_list 4. May try to set rng to current_rng If step 4 fails, it returns an error. However, it does not remove the rng from rng_list, causing a dangling reference which can result in use-after-free if the caller frees rng, since registration failed. Add a list_del_init() cleanup step.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2bbb6983887fefc8026beab01198d30f47b7bd22
Version: 2bbb6983887fefc8026beab01198d30f47b7bd22
Version: 2bbb6983887fefc8026beab01198d30f47b7bd22
Version: 2bbb6983887fefc8026beab01198d30f47b7bd22
Version: 2bbb6983887fefc8026beab01198d30f47b7bd22
Version: 42802952a2725f85f7e36ee3b29593af5fe87197
Version: 4.9.320   ≤
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: core - fix rng list on registration error\n\nhwrng_register(rng) does the following:\n\n1. Checks if rng has name and read methods set\n2. Checks if the name already exists\n3. Adds rng to global rng_list\n4. May try to set rng to current_rng\n\nIf step 4 fails, it returns an error. However, it does not remove the\nrng from rng_list, causing a dangling reference which can result in\nuse-after-free if the caller frees rng, since registration failed.\n\nAdd a list_del_init() cleanup step."
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      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:52:06.483Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        },
        {
          "url": "https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93163",
    "datePublished": "2026-09-17T16:11:56.570Z",
    "dateReserved": "2026-09-17T16:02:15.089Z",
    "dateUpdated": "2026-10-21T12:52:06.483Z",
    "state": "PUBLISHED"
  },
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}


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