ghsa-242f-ccpq-545j
Vulnerability from github
Published
2024-12-27 15:31
Modified
2025-01-14 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct()

Passing MSG_PEEK flag to skb_recv_datagram() increments skb refcount (skb->users) and iucv_sock_recvmsg() does not decrement skb refcount at exit. This results in skb memory leak in skb_queue_purge() and WARN_ON in iucv_sock_destruct() during socket close. To fix this decrease skb refcount by one if MSG_PEEK is set in order to prevent memory leak and WARN_ON.

WARNING: CPU: 2 PID: 6292 at net/iucv/af_iucv.c:286 iucv_sock_destruct+0x144/0x1a0 [af_iucv] CPU: 2 PID: 6292 Comm: afiucv_test_msg Kdump: loaded Tainted: G W 6.10.0-rc7 #1 Hardware name: IBM 3931 A01 704 (z/VM 7.3.0) Call Trace: [<001587c682c4aa98>] iucv_sock_destruct+0x148/0x1a0 [af_iucv] [<001587c682c4a9d0>] iucv_sock_destruct+0x80/0x1a0 [af_iucv] [<001587c704117a32>] __sk_destruct+0x52/0x550 [<001587c704104a54>] __sock_release+0xa4/0x230 [<001587c704104c0c>] sock_close+0x2c/0x40 [<001587c702c5f5a8>] __fput+0x2e8/0x970 [<001587c7024148c4>] task_work_run+0x1c4/0x2c0 [<001587c7023b0716>] do_exit+0x996/0x1050 [<001587c7023b13aa>] do_group_exit+0x13a/0x360 [<001587c7023b1626>] __s390x_sys_exit_group+0x56/0x60 [<001587c7022bccca>] do_syscall+0x27a/0x380 [<001587c7049a6a0c>] __do_syscall+0x9c/0x160 [<001587c7049ce8a8>] system_call+0x70/0x98 Last Breaking-Event-Address: [<001587c682c4a9d4>] iucv_sock_destruct+0x84/0x1a0 [af_iucv]

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{
   affected: [],
   aliases: [
      "CVE-2024-53210",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-401",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-12-27T14:15:28Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct()\n\nPassing MSG_PEEK flag to skb_recv_datagram() increments skb refcount\n(skb->users) and iucv_sock_recvmsg() does not decrement skb refcount\nat exit.\nThis results in skb memory leak in skb_queue_purge() and WARN_ON in\niucv_sock_destruct() during socket close. To fix this decrease\nskb refcount by one if MSG_PEEK is set in order to prevent memory\nleak and WARN_ON.\n\nWARNING: CPU: 2 PID: 6292 at net/iucv/af_iucv.c:286 iucv_sock_destruct+0x144/0x1a0 [af_iucv]\nCPU: 2 PID: 6292 Comm: afiucv_test_msg Kdump: loaded Tainted: G        W          6.10.0-rc7 #1\nHardware name: IBM 3931 A01 704 (z/VM 7.3.0)\nCall Trace:\n        [<001587c682c4aa98>] iucv_sock_destruct+0x148/0x1a0 [af_iucv]\n        [<001587c682c4a9d0>] iucv_sock_destruct+0x80/0x1a0 [af_iucv]\n        [<001587c704117a32>] __sk_destruct+0x52/0x550\n        [<001587c704104a54>] __sock_release+0xa4/0x230\n        [<001587c704104c0c>] sock_close+0x2c/0x40\n        [<001587c702c5f5a8>] __fput+0x2e8/0x970\n        [<001587c7024148c4>] task_work_run+0x1c4/0x2c0\n        [<001587c7023b0716>] do_exit+0x996/0x1050\n        [<001587c7023b13aa>] do_group_exit+0x13a/0x360\n        [<001587c7023b1626>] __s390x_sys_exit_group+0x56/0x60\n        [<001587c7022bccca>] do_syscall+0x27a/0x380\n        [<001587c7049a6a0c>] __do_syscall+0x9c/0x160\n        [<001587c7049ce8a8>] system_call+0x70/0x98\n        Last Breaking-Event-Address:\n        [<001587c682c4a9d4>] iucv_sock_destruct+0x84/0x1a0 [af_iucv]",
   id: "GHSA-242f-ccpq-545j",
   modified: "2025-01-14T18:31:54Z",
   published: "2024-12-27T15:31:52Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-53210",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/42251c2d1ef1cb0822638bebb87ad9120c759673",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/783c2c6e61c5a04eb8baea598753d5fa174dbe85",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/934326aef7ac4652f81c69d18bf44eebaefc39c3",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/9f603e66e1c59c1d25e60eb0636cb307d190782e",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/ebaf81317e42aa990ad20b113cfe3a7b20d4e937",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
}


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