ghsa-fwfj-54vh-4r92
Vulnerability from github
Published
2024-11-07 12:30
Modified
2024-11-13 15:31
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:

scsi: target: core: Fix null-ptr-deref in target_alloc_device()

There is a null-ptr-deref issue reported by KASAN:

BUG: KASAN: null-ptr-deref in target_alloc_device+0xbc4/0xbe0 [target_core_mod] ... kasan_report+0xb9/0xf0 target_alloc_device+0xbc4/0xbe0 [target_core_mod] core_dev_setup_virtual_lun0+0xef/0x1f0 [target_core_mod] target_core_init_configfs+0x205/0x420 [target_core_mod] do_one_initcall+0xdd/0x4e0 ... entry_SYSCALL_64_after_hwframe+0x76/0x7e

In target_alloc_device(), if allocing memory for dev queues fails, then dev will be freed by dev->transport->free_device(), but dev->transport is not initialized at that time, which will lead to a null pointer reference problem.

Fixing this bug by freeing dev with hba->backend->ops->free_device().

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{
   affected: [],
   aliases: [
      "CVE-2024-50153",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-476",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-11-07T10:15:06Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Fix null-ptr-deref in target_alloc_device()\n\nThere is a null-ptr-deref issue reported by KASAN:\n\nBUG: KASAN: null-ptr-deref in target_alloc_device+0xbc4/0xbe0 [target_core_mod]\n...\n kasan_report+0xb9/0xf0\n target_alloc_device+0xbc4/0xbe0 [target_core_mod]\n core_dev_setup_virtual_lun0+0xef/0x1f0 [target_core_mod]\n target_core_init_configfs+0x205/0x420 [target_core_mod]\n do_one_initcall+0xdd/0x4e0\n...\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nIn target_alloc_device(), if allocing memory for dev queues fails, then\ndev will be freed by dev->transport->free_device(), but dev->transport\nis not initialized at that time, which will lead to a null pointer\nreference problem.\n\nFixing this bug by freeing dev with hba->backend->ops->free_device().",
   id: "GHSA-fwfj-54vh-4r92",
   modified: "2024-11-13T15:31:37Z",
   published: "2024-11-07T12:30:35Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-50153",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/14a6a2adb440e4ae97bee73b2360946bd033dadd",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/39e02fa90323243187c91bb3e8f2f5f6a9aacfc7",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/895ab729425ef9bf3b6d2f8d0853abe64896f314",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/8c1e6717f60d31f8af3937c23c4f1498529584e1",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b80e9bc85bd9af378e7eac83e15dd129557bbdb6",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/fca6caeb4a61d240f031914413fcc69534f6dc03",
      },
   ],
   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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