fkie_cve-2021-47438
Vulnerability from fkie_nvd
Published
2024-05-22 07:15
Modified
2025-01-07 20:14
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path Prior to this patch in case mlx5_core_destroy_cq() failed it returns without completing all destroy operations and that leads to memory leak. Instead, complete the destroy flow before return error. Also move mlx5_debug_cq_remove() to the beginning of mlx5_core_destroy_cq() to be symmetrical with mlx5_core_create_cq(). kmemleak complains on: unreferenced object 0xc000000038625100 (size 64): comm "ethtool", pid 28301, jiffies 4298062946 (age 785.380s) hex dump (first 32 bytes): 60 01 48 94 00 00 00 c0 b8 05 34 c3 00 00 00 c0 `.H.......4..... 02 00 00 00 00 00 00 00 00 db 7d c1 00 00 00 c0 ..........}..... backtrace: [<000000009e8643cb>] add_res_tree+0xd0/0x270 [mlx5_core] [<00000000e7cb8e6c>] mlx5_debug_cq_add+0x5c/0xc0 [mlx5_core] [<000000002a12918f>] mlx5_core_create_cq+0x1d0/0x2d0 [mlx5_core] [<00000000cef0a696>] mlx5e_create_cq+0x210/0x3f0 [mlx5_core] [<000000009c642c26>] mlx5e_open_cq+0xb4/0x130 [mlx5_core] [<0000000058dfa578>] mlx5e_ptp_open+0x7f4/0xe10 [mlx5_core] [<0000000081839561>] mlx5e_open_channels+0x9cc/0x13e0 [mlx5_core] [<0000000009cf05d4>] mlx5e_switch_priv_channels+0xa4/0x230 [mlx5_core] [<0000000042bbedd8>] mlx5e_safe_switch_params+0x14c/0x300 [mlx5_core] [<0000000004bc9db8>] set_pflag_tx_port_ts+0x9c/0x160 [mlx5_core] [<00000000a0553443>] mlx5e_set_priv_flags+0xd0/0x1b0 [mlx5_core] [<00000000a8f3d84b>] ethnl_set_privflags+0x234/0x2d0 [<00000000fd27f27c>] genl_family_rcv_msg_doit+0x108/0x1d0 [<00000000f495e2bb>] genl_family_rcv_msg+0xe4/0x1f0 [<00000000646c5c2c>] genl_rcv_msg+0x78/0x120 [<00000000d53e384e>] netlink_rcv_skb+0x74/0x1a0
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
               cpeMatch: [
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "CA7083CE-AF63-4A62-9833-F4FF57A65816",
                     versionEndExcluding: "5.10.75",
                     versionStartIncluding: "3.11",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                     matchCriteriaId: "BF43A331-D430-4B9D-A612-E63C62AE4A86",
                     versionEndExcluding: "5.14.14",
                     versionStartIncluding: "5.11",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*",
                     matchCriteriaId: "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*",
                     matchCriteriaId: "60134C3A-06E4-48C1-B04F-2903732A4E56",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*",
                     matchCriteriaId: "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*",
                     matchCriteriaId: "AF55383D-4DF2-45DC-93F7-571F4F978EAB",
                     vulnerable: true,
                  },
                  {
                     criteria: "cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*",
                     matchCriteriaId: "9E9481B2-8AA6-4CBD-B5D3-C10F51FF6D01",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
            },
         ],
      },
   ],
   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 resolvió la siguiente vulnerabilidad: net/mlx5e: corrige la pérdida 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 destrucción y eso conduce a una pérdida de memoria. En su lugar, complete el flujo de destrucción antes de que se produzca el error de devolución. También mueva mlx5_debug_cq_remove() al principio de mlx5_core_destroy_cq() para que sea simétrico con mlx5_core_create_cq(). kmemleak se queja de: objeto sin referencia 0xc000000038625100 (tamaño 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 atrás : [&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",
      },
   ],
   id: "CVE-2021-47438",
   lastModified: "2025-01-07T20:14:16.923",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               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",
            },
            exploitabilityScore: 1.8,
            impactScore: 3.6,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-05-22T07:15:09.080",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/4f7bddf8c5c01cac74373443b13a68e1c6723a94",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/94b960b9deffc02fc0747afc01f72cc62ab099e3",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         tags: [
            "Patch",
         ],
         url: "https://git.kernel.org/stable/c/ed8aafea4fec9c654e63445236e0b505e27ed3a7",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-401",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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