CVE-2025-21980 (GCVE-0-2025-21980)
Vulnerability from cvelistv5
Published
2025-04-01 15:47
Modified
2025-05-04 07:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sched: address a potential NULL pointer dereference in the GRED scheduler. If kzalloc in gred_init returns a NULL pointer, the code follows the error handling path, invoking gred_destroy. This, in turn, calls gred_offload, where memset could receive a NULL pointer as input, potentially leading to a kernel crash. When table->opt is NULL in gred_init(), gred_change_table_def() is not called yet, so it is not necessary to call ->ndo_setup_tc() in gred_offload().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f0a152957d64ce45b4c27c687e7d087e8f45079Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/115ef44a98220fddfab37a39a19370497cd718b9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5f996b4f80c2cef1f9c77275055e7fcba44c9199Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/68896dd50180b38ea552e49a6a00b685321e5769Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d02c9acd68950a444acda18d514e2b41f846cb7fPatch
Impacted products
Vendor Product Version
Linux Linux Version: f25c0515c521375154c62c72447869f40218c861
Version: f25c0515c521375154c62c72447869f40218c861
Version: f25c0515c521375154c62c72447869f40218c861
Version: f25c0515c521375154c62c72447869f40218c861
Version: f25c0515c521375154c62c72447869f40218c861
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   Linux Linux Version: 5.16
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_gred.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched: address a potential NULL pointer dereference in the GRED scheduler.\n\nIf kzalloc in gred_init returns a NULL pointer, the code follows the\nerror handling path, invoking gred_destroy. This, in turn, calls\ngred_offload, where memset could receive a NULL pointer as input,\npotentially leading to a kernel crash.\n\nWhen table-\u003eopt is NULL in gred_init(), gred_change_table_def()\nis not called yet, so it is not necessary to call -\u003endo_setup_tc()\nin gred_offload()."
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        "dateUpdated": "2025-05-04T07:26:30.555Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "sched: address a potential NULL pointer dereference in the GRED scheduler.",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21980",
    "datePublished": "2025-04-01T15:47:09.232Z",
    "dateReserved": "2024-12-29T08:45:45.799Z",
    "dateUpdated": "2025-05-04T07:26:30.555Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21980\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-01T16:15:29.390\",\"lastModified\":\"2025-04-10T13:25:42.490\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsched: address a potential NULL pointer dereference in the GRED scheduler.\\n\\nIf kzalloc in gred_init returns a NULL pointer, the code follows the\\nerror handling path, invoking gred_destroy. This, in turn, calls\\ngred_offload, where memset could receive a NULL pointer as input,\\npotentially leading to a kernel crash.\\n\\nWhen table-\u003eopt is NULL in gred_init(), gred_change_table_def()\\nis not called yet, so it is not necessary to call -\u003endo_setup_tc()\\nin gred_offload().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched: soluciona una posible desreferencia de puntero nulo en el programador GRED. Si kzalloc en gred_init devuelve un puntero nulo, el c\u00f3digo sigue la ruta de gesti\u00f3n de errores, invocando gred_destroy. Esto, a su vez, llama a gred_offload, donde memset podr\u00eda recibir un puntero nulo como entrada, lo que podr\u00eda provocar un fallo del kernel. Cuando table-\u0026gt;opt es nulo en gred_init(), gred_change_table_def() a\u00fan no se llama, por lo que no es necesario llamar a -\u0026gt;ndo_setup_tc() en gred_offload().\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.132\",\"matchCriteriaId\":\"91D1C2F6-55A1-4CF4-AC66-ADF758259C59\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.84\",\"matchCriteriaId\":\"994E0F00-FAC4-40E4-9068-C7D4D8242EC8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.20\",\"matchCriteriaId\":\"60E9C5DF-D778-4572-848A-5D6CFFE022CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.8\",\"matchCriteriaId\":\"0A20D4D7-B329-4C68-B662-76062EA7DCF0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"186716B6-2B66-4BD0-852E-D48E71C0C85F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D3E781C-403A-498F-9DA9-ECEE50F41E75\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"66619FB8-0AAF-4166-B2CF-67B24143261D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3D6550E-6679-4560-902D-AF52DCFE905B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"45B90F6B-BEC7-4D4E-883A-9DBADE021750\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"1759FFB7-531C-41B1-9AE1-FD3D80E0D920\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0f0a152957d64ce45b4c27c687e7d087e8f45079\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/115ef44a98220fddfab37a39a19370497cd718b9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5f996b4f80c2cef1f9c77275055e7fcba44c9199\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/68896dd50180b38ea552e49a6a00b685321e5769\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d02c9acd68950a444acda18d514e2b41f846cb7f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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