GHSA-P22C-78XJ-4FP8
Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2025-12-24 12:30In 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: [] __kmalloc_node_track_caller+0x4e/0x150 [] kstrdup+0x33/0x60 [] kobject_set_name_vargs+0x41/0x110 [] dev_set_name+0xab/0xe0 [] device_add+0xe3/0x1a80 [] 0xffffffffa0270013 [] do_one_initcall+0x87/0x2e0 [] do_init_module+0x1ab/0x640 [] load_module+0x5d00/0x77f0 [] __do_sys_finit_module+0x110/0x1b0 [] do_syscall_64+0x35/0x80 [] 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: [] __kmalloc_node_track_caller+0x4e/0x150 [] kstrdup+0x33/0x60 [] kobject_set_name_vargs+0x41/0x110 [] dev_set_name+0xab/0xe0 [] device_add+0xe3/0x1a80 [] 0xffffffffa0220013 [] do_one_initcall+0x87/0x2e0 [] do_init_module+0x1ab/0x640 [] load_module+0x5d00/0x77f0 [] __do_sys_finit_module+0x110/0x1b0 [] do_syscall_64+0x35/0x80 [] entry_SYSCALL_64_after_hwframe+0x46/0xb0
{
"affected": [],
"aliases": [
"CVE-2022-50702"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-24T11:15:50Z",
"severity": null
},
"details": "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": "GHSA-p22c-78xj-4fp8",
"modified": "2025-12-24T12:30:26Z",
"published": "2025-12-24T12:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50702"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/337c24d817e28dd454ca22f1063dfad20822426e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/586e6fd7d581f987f7d0d2592edf0b26397e783e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5be953e353fe421f2983e1fd37f07fba97edbffc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aeca7ff254843d49a8739f07f7dab1341450111d"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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