fkie_cve-2021-47190
Vulnerability from fkie_nvd
Published
2024-04-10 19:15
Modified
2025-01-07 17:11
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
perf bpf: Avoid memory leak from perf_env__insert_btf()
perf_env__insert_btf() doesn't insert if a duplicate BTF id is
encountered and this causes a memory leak. Modify the function to return
a success/error value and then free the memory if insertion didn't
happen.
v2. Adds a return -1 when the insertion error occurs in
perf_env__fetch_btf. This doesn't affect anything as the result is
never checked.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
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"cveTags": [],
"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf bpf: Avoid memory leak from perf_env__insert_btf()\n\nperf_env__insert_btf() doesn\u0027t insert if a duplicate BTF id is\nencountered and this causes a memory leak. Modify the function to return\na success/error value and then free the memory if insertion didn\u0027t\nhappen.\n\nv2. Adds a return -1 when the insertion error occurs in\n perf_env__fetch_btf. This doesn\u0027t affect anything as the result is\n never checked."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf bpf: Evitar p\u00e9rdida de memoria de perf_env__insert_btf() perf_env__insert_btf() no se inserta si se encuentra un ID de BTF duplicado y esto provoca una p\u00e9rdida de memoria. Modifique la funci\u00f3n para que devuelva un valor de \u00e9xito/error y luego libere la memoria si la inserci\u00f3n no ocurri\u00f3. v2. Agrega un retorno -1 cuando ocurre el error de inserci\u00f3n en perf_env__fetch_btf. Esto no afecta a nada ya que el resultado nunca se verifica."
}
],
"id": "CVE-2021-47190",
"lastModified": "2025-01-07T17:11:50.810",
"metrics": {
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"published": "2024-04-10T19:15:47.617",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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