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nvd-json-data-feeds/CVE-2021/CVE-2021-474xx/CVE-2021-47438.json
cad-safe-bot 13248fc7e3 Auto-Update: 2025-01-07T21:00:22.641032+00:00
2025-01-07 21:03:46 +00:00

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{
"id": "CVE-2021-47438",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-05-22T07:15:09.080",
"lastModified": "2025-01-07T20:14:16.923",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path\n\nPrior to this patch in case mlx5_core_destroy_cq() failed it returns\nwithout completing all destroy operations and that leads to memory leak.\nInstead, complete the destroy flow before return error.\n\nAlso move mlx5_debug_cq_remove() to the beginning of mlx5_core_destroy_cq()\nto be symmetrical with mlx5_core_create_cq().\n\nkmemleak complains on:\n\nunreferenced object 0xc000000038625100 (size 64):\n comm \"ethtool\", pid 28301, jiffies 4298062946 (age 785.380s)\n hex dump (first 32 bytes):\n 60 01 48 94 00 00 00 c0 b8 05 34 c3 00 00 00 c0 `.H.......4.....\n 02 00 00 00 00 00 00 00 00 db 7d c1 00 00 00 c0 ..........}.....\n backtrace:\n [<000000009e8643cb>] add_res_tree+0xd0/0x270 [mlx5_core]\n [<00000000e7cb8e6c>] mlx5_debug_cq_add+0x5c/0xc0 [mlx5_core]\n [<000000002a12918f>] mlx5_core_create_cq+0x1d0/0x2d0 [mlx5_core]\n [<00000000cef0a696>] mlx5e_create_cq+0x210/0x3f0 [mlx5_core]\n [<000000009c642c26>] mlx5e_open_cq+0xb4/0x130 [mlx5_core]\n [<0000000058dfa578>] mlx5e_ptp_open+0x7f4/0xe10 [mlx5_core]\n [<0000000081839561>] mlx5e_open_channels+0x9cc/0x13e0 [mlx5_core]\n [<0000000009cf05d4>] mlx5e_switch_priv_channels+0xa4/0x230\n[mlx5_core]\n [<0000000042bbedd8>] mlx5e_safe_switch_params+0x14c/0x300\n[mlx5_core]\n [<0000000004bc9db8>] set_pflag_tx_port_ts+0x9c/0x160 [mlx5_core]\n [<00000000a0553443>] mlx5e_set_priv_flags+0xd0/0x1b0 [mlx5_core]\n [<00000000a8f3d84b>] ethnl_set_privflags+0x234/0x2d0\n [<00000000fd27f27c>] genl_family_rcv_msg_doit+0x108/0x1d0\n [<00000000f495e2bb>] genl_family_rcv_msg+0xe4/0x1f0\n [<00000000646c5c2c>] genl_rcv_msg+0x78/0x120\n [<00000000d53e384e>] netlink_rcv_skb+0x74/0x1a0"
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/mlx5e: corrige la p\u00e9rdida de memoria en la ruta de error mlx5_core_destroy_cq(). Antes de este parche, en caso de que mlx5_core_destroy_cq() fallara, regresa sin completar todas las operaciones de destrucci\u00f3n y eso conduce a una p\u00e9rdida de memoria. En su lugar, complete el flujo de destrucci\u00f3n antes de que se produzca el error de devoluci\u00f3n. Tambi\u00e9n mueva mlx5_debug_cq_remove() al principio de mlx5_core_destroy_cq() para que sea sim\u00e9trico con mlx5_core_create_cq(). kmemleak se queja de: objeto sin referencia 0xc000000038625100 (tama\u00f1o 64): comm \"ethtool\", pid 28301, jiffies 4298062946 (edad 785.380 s) volcado hexadecimal (primeros 32 bytes): 60 01 48 94 00 00 00 c0 b8 05 34 3 00 00 00 c0 `.H.......4..... 02 00 00 00 00 00 00 00 00 db 7d c1 00 00 00 c0 ..........}..... rastreo hacia atr\u00e1s : [&lt;000000009e8643cb&gt;] add_res_tree+0xd0/0x270 [mlx5_core] [&lt;00000000e7cb8e6c&gt;] mlx5_debug_cq_add+0x5c/0xc0 [mlx5_core] [&lt;000000002a12918f&gt;] 0x1d0/0x2d0 [mlx5_core] [&lt;00000000cef0a696&gt;] mlx5e_create_cq+0x210/0x3f0 [mlx5_core] [&lt;000000009c642c26&gt;] mlx5e_open_cq+0xb4/0x130 [mlx5_core] [&lt;0000000058dfa578&gt;] mlx5e_ptp_open+0x7f4/0xe10 [mlx5_core] [&lt;0000000081839561&gt;] 5e_open_channels+0x9cc/0x13e0 [mlx5_core] [&lt;0000000009cf05d4&gt;] mlx5e_switch_priv_channels+0xa4 /0x230 [mlx5_core] [&lt;0000000042bbedd8&gt;] mlx5e_safe_switch_params+0x14c/0x300 [mlx5_core] [&lt;0000000004bc9db8&gt;] set_pflag_tx_port_ts+0x9c/0x160 [mlx5_core [&lt;00000000a] 0553443&gt;] mlx5e_set_priv_flags+0xd0/0x1b0 [mlx5_core] [&lt;00000000a8f3d84b&gt;] etnl_set_privflags +0x234/0x2d0 [&lt;00000000fd27f27c&gt;] genl_family_rcv_msg_doit+0x108/0x1d0 [&lt;00000000f495e2bb&gt;] genl_family_rcv_msg+0xe4/0x1f0 [&lt;00000000646c5c2c&gt;] v_msg+0x78/0x120 [&lt;00000000d53e384e&gt;] netlink_rcv_skb+0x74/0x1a0"
}
],
"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-401"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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"references": [
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}
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