fkie_cve-2022-49058
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-03-18 19:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
cifs: potential buffer overflow in handling symlinks
Smatch printed a warning:
arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error:
__memcpy() 'dctx->buf' too small (16 vs u32max)
It's caused because Smatch marks 'link_len' as untrusted since it comes
from sscanf(). Add a check to ensure that 'link_len' is not larger than
the size of the 'link_str' buffer.
References
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 | * | |
| linux | linux_kernel | 5.18 | |
| linux | linux_kernel | 5.18 |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: potential buffer overflow in handling symlinks\n\nSmatch printed a warning:\n\tarch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error:\n\t__memcpy() \u0027dctx-\u003ebuf\u0027 too small (16 vs u32max)\n\nIt\u0027s caused because Smatch marks \u0027link_len\u0027 as untrusted since it comes\nfrom sscanf(). Add a check to ensure that \u0027link_len\u0027 is not larger than\nthe size of the \u0027link_str\u0027 buffer."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: desbordamiento de b\u00fafer potencial al manejar enlaces simb\u00f3licos Smatch imprimi\u00f3 una advertencia: arch/x86/crypto/poly1305_glue.c:198 poly1305_update_arch() error: __memcpy() \u0027dctx-\u0026gt;buf\u0027 demasiado peque\u00f1o (16 vs u32max) Esto se debe a que Smatch marca \u0027link_len\u0027 como no confiable ya que proviene de sscanf(). Agregue una verificaci\u00f3n para asegurarse de que \u0027link_len\u0027 no sea m\u00e1s grande que el tama\u00f1o del b\u00fafer \u0027link_str\u0027."
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],
"id": "CVE-2022-49058",
"lastModified": "2025-03-18T19:08:08.200",
"metrics": {
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
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"published": "2025-02-26T07:00:43.047",
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"vulnStatus": "Analyzed",
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"value": "CWE-120"
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],
"source": "nvd@nist.gov",
"type": "Primary"
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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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