fkie_cve-2025-38546
Vulnerability from fkie_nvd
Published
2025-08-16 12:15
Modified
2025-08-18 20:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
atm: clip: Fix memory leak of struct clip_vcc.
ioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to
vcc->user_back.
The code assumes that vcc_destroy_socket() passes NULL skb
to vcc->push() when the socket is close()d, and then clip_push()
frees clip_vcc.
However, ioctl(ATMARPD_CTRL) sets NULL to vcc->push() in
atm_init_atmarp(), resulting in memory leak.
Let's serialise two ioctl() by lock_sock() and check vcc->push()
in atm_init_atmarp() to prevent memleak.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\natm: clip: Fix memory leak of struct clip_vcc.\n\nioctl(ATMARP_MKIP) allocates struct clip_vcc and set it to\nvcc-\u003euser_back.\n\nThe code assumes that vcc_destroy_socket() passes NULL skb\nto vcc-\u003epush() when the socket is close()d, and then clip_push()\nfrees clip_vcc.\n\nHowever, ioctl(ATMARPD_CTRL) sets NULL to vcc-\u003epush() in\natm_init_atmarp(), resulting in memory leak.\n\nLet\u0027s serialise two ioctl() by lock_sock() and check vcc-\u003epush()\nin atm_init_atmarp() to prevent memleak."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: clip: Se corrige la fuga de memoria de la estructura clip_vcc. ioctl(ATMARP_MKIP) asigna la estructura clip_vcc y la establece en vcc-\u0026gt;user_back. El c\u00f3digo asume que vcc_destroy_socket() pasa un skb nulo a vcc-\u0026gt;push() cuando se cierra el socket, y que clip_push() libera clip_vcc. Sin embargo, ioctl(ATMARPD_CTRL) establece vcc-\u0026gt;push() en nulo en atm_init_atmarp(), lo que provoca una fuga de memoria. Serialicemos dos ioctl() mediante lock_sock() y comprobemos vcc-\u0026gt;push() en atm_init_atmarp() para evitar fugas de memoria."
}
],
"id": "CVE-2025-38546",
"lastModified": "2025-08-18T20:16:28.750",
"metrics": {},
"published": "2025-08-16T12:15:30.620",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/0c17ff462d98c997d707ee5cf4e4a9b1b52b9d90"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/1c075e88d5859a2c6b43b27e0e46fb281cef8039"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/1fb9fb5a4b5cec2d56e26525ef8c519de858fa60"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2fb37ab3226606cbfc9b2b6f9e301b0b735734c5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/62dba28275a9a3104d4e33595c7b3328d4032d8d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/9e4dbeee56f614e3f1e166e5d0655a999ea185ef"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/9f771816f14da6d6157a8c30069091abf6b566fb"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/cb2e4a2f8f268d8fba6662f663a2e57846f14a8d"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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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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