FKIE_CVE-2022-50702

Vulnerability from fkie_nvd - Published: 2025-12-24 11:15 - Updated: 2026-06-17 05:24
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: vdpa_sim: fix possible memory leak in vdpasim_net_init() and vdpasim_blk_init() Inject fault while probing module, if device_register() fails in vdpasim_net_init() or vdpasim_blk_init(), but the refcount of kobject is not decreased to 0, the name allocated in dev_set_name() is leaked. Fix this by calling put_device(), so that name can be freed in callback function kobject_cleanup(). (vdpa_sim_net) unreferenced object 0xffff88807eebc370 (size 16): comm "modprobe", pid 3848, jiffies 4362982860 (age 18.153s) hex dump (first 16 bytes): 76 64 70 61 73 69 6d 5f 6e 65 74 00 6b 6b 6b a5 vdpasim_net.kkk. backtrace: [<ffffffff8174f19e>] __kmalloc_node_track_caller+0x4e/0x150 [<ffffffff81731d53>] kstrdup+0x33/0x60 [<ffffffff83a5d421>] kobject_set_name_vargs+0x41/0x110 [<ffffffff82d87aab>] dev_set_name+0xab/0xe0 [<ffffffff82d91a23>] device_add+0xe3/0x1a80 [<ffffffffa0270013>] 0xffffffffa0270013 [<ffffffff81001c27>] do_one_initcall+0x87/0x2e0 [<ffffffff813739cb>] do_init_module+0x1ab/0x640 [<ffffffff81379d20>] load_module+0x5d00/0x77f0 [<ffffffff8137bc40>] __do_sys_finit_module+0x110/0x1b0 [<ffffffff83c4d505>] do_syscall_64+0x35/0x80 [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 (vdpa_sim_blk) unreferenced object 0xffff8881070c1250 (size 16): comm "modprobe", pid 6844, jiffies 4364069319 (age 17.572s) hex dump (first 16 bytes): 76 64 70 61 73 69 6d 5f 62 6c 6b 00 6b 6b 6b a5 vdpasim_blk.kkk. backtrace: [<ffffffff8174f19e>] __kmalloc_node_track_caller+0x4e/0x150 [<ffffffff81731d53>] kstrdup+0x33/0x60 [<ffffffff83a5d421>] kobject_set_name_vargs+0x41/0x110 [<ffffffff82d87aab>] dev_set_name+0xab/0xe0 [<ffffffff82d91a23>] device_add+0xe3/0x1a80 [<ffffffffa0220013>] 0xffffffffa0220013 [<ffffffff81001c27>] do_one_initcall+0x87/0x2e0 [<ffffffff813739cb>] do_init_module+0x1ab/0x640 [<ffffffff81379d20>] load_module+0x5d00/0x77f0 [<ffffffff8137bc40>] __do_sys_finit_module+0x110/0x1b0 [<ffffffff83c4d505>] do_syscall_64+0x35/0x80 [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/337c24d817e28dd454ca22f1063dfad20822426e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/586e6fd7d581f987f7d0d2592edf0b26397e783e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5be953e353fe421f2983e1fd37f07fba97edbffc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aeca7ff254843d49a8739f07f7dab1341450111d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vdpa/vdpa_sim/vdpa_sim_blk.c",
            "drivers/vdpa/vdpa_sim/vdpa_sim_net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "586e6fd7d581f987f7d0d2592edf0b26397e783e",
              "status": "affected",
              "version": "a3c06ae158dd6fa8336157c31d9234689d068d02",
              "versionType": "git"
            },
            {
              "lessThan": "5be953e353fe421f2983e1fd37f07fba97edbffc",
              "status": "affected",
              "version": "a3c06ae158dd6fa8336157c31d9234689d068d02",
              "versionType": "git"
            },
            {
              "lessThan": "337c24d817e28dd454ca22f1063dfad20822426e",
              "status": "affected",
              "version": "a3c06ae158dd6fa8336157c31d9234689d068d02",
              "versionType": "git"
            },
            {
              "lessThan": "aeca7ff254843d49a8739f07f7dab1341450111d",
              "status": "affected",
              "version": "a3c06ae158dd6fa8336157c31d9234689d068d02",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/vdpa/vdpa_sim/vdpa_sim_blk.c",
            "drivers/vdpa/vdpa_sim/vdpa_sim_net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa_sim: fix possible memory leak in vdpasim_net_init() and vdpasim_blk_init()\n\nInject fault while probing module, if device_register() fails in\nvdpasim_net_init() or vdpasim_blk_init(), but the refcount of kobject is\nnot decreased to 0, the name allocated in dev_set_name() is leaked.\nFix this by calling put_device(), so that name can be freed in\ncallback function kobject_cleanup().\n\n(vdpa_sim_net)\nunreferenced object 0xffff88807eebc370 (size 16):\n  comm \"modprobe\", pid 3848, jiffies 4362982860 (age 18.153s)\n  hex dump (first 16 bytes):\n    76 64 70 61 73 69 6d 5f 6e 65 74 00 6b 6b 6b a5  vdpasim_net.kkk.\n  backtrace:\n    [\u003cffffffff8174f19e\u003e] __kmalloc_node_track_caller+0x4e/0x150\n    [\u003cffffffff81731d53\u003e] kstrdup+0x33/0x60\n    [\u003cffffffff83a5d421\u003e] kobject_set_name_vargs+0x41/0x110\n    [\u003cffffffff82d87aab\u003e] dev_set_name+0xab/0xe0\n    [\u003cffffffff82d91a23\u003e] device_add+0xe3/0x1a80\n    [\u003cffffffffa0270013\u003e] 0xffffffffa0270013\n    [\u003cffffffff81001c27\u003e] do_one_initcall+0x87/0x2e0\n    [\u003cffffffff813739cb\u003e] do_init_module+0x1ab/0x640\n    [\u003cffffffff81379d20\u003e] load_module+0x5d00/0x77f0\n    [\u003cffffffff8137bc40\u003e] __do_sys_finit_module+0x110/0x1b0\n    [\u003cffffffff83c4d505\u003e] do_syscall_64+0x35/0x80\n    [\u003cffffffff83e0006a\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\n(vdpa_sim_blk)\nunreferenced object 0xffff8881070c1250 (size 16):\n  comm \"modprobe\", pid 6844, jiffies 4364069319 (age 17.572s)\n  hex dump (first 16 bytes):\n    76 64 70 61 73 69 6d 5f 62 6c 6b 00 6b 6b 6b a5  vdpasim_blk.kkk.\n  backtrace:\n    [\u003cffffffff8174f19e\u003e] __kmalloc_node_track_caller+0x4e/0x150\n    [\u003cffffffff81731d53\u003e] kstrdup+0x33/0x60\n    [\u003cffffffff83a5d421\u003e] kobject_set_name_vargs+0x41/0x110\n    [\u003cffffffff82d87aab\u003e] dev_set_name+0xab/0xe0\n    [\u003cffffffff82d91a23\u003e] device_add+0xe3/0x1a80\n    [\u003cffffffffa0220013\u003e] 0xffffffffa0220013\n    [\u003cffffffff81001c27\u003e] do_one_initcall+0x87/0x2e0\n    [\u003cffffffff813739cb\u003e] do_init_module+0x1ab/0x640\n    [\u003cffffffff81379d20\u003e] load_module+0x5d00/0x77f0\n    [\u003cffffffff8137bc40\u003e] __do_sys_finit_module+0x110/0x1b0\n    [\u003cffffffff83c4d505\u003e] do_syscall_64+0x35/0x80\n    [\u003cffffffff83e0006a\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0"
    }
  ],
  "id": "CVE-2022-50702",
  "lastModified": "2026-06-17T05:24:01.993",
  "metrics": {},
  "published": "2025-12-24T11:15:50.360",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/337c24d817e28dd454ca22f1063dfad20822426e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/586e6fd7d581f987f7d0d2592edf0b26397e783e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5be953e353fe421f2983e1fd37f07fba97edbffc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aeca7ff254843d49a8739f07f7dab1341450111d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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