fkie_cve-2022-49959
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-06-18 13:46
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
openvswitch: fix memory leak at failed datapath creation
ovs_dp_cmd_new()->ovs_dp_change()->ovs_dp_set_upcall_portids()
allocates array via kmalloc.
If for some reason new_vport() fails during ovs_dp_cmd_new()
dp->upcall_portids must be freed.
Add missing kfree.
Kmemleak example:
unreferenced object 0xffff88800c382500 (size 64):
comm "dump_state", pid 323, jiffies 4294955418 (age 104.347s)
hex dump (first 32 bytes):
5e c2 79 e4 1f 7a 38 c7 09 21 38 0c 80 88 ff ff ^.y..z8..!8.....
03 00 00 00 0a 00 00 00 14 00 00 00 28 00 00 00 ............(...
backtrace:
[<0000000071bebc9f>] ovs_dp_set_upcall_portids+0x38/0xa0
[<000000000187d8bd>] ovs_dp_change+0x63/0xe0
[<000000002397e446>] ovs_dp_cmd_new+0x1f0/0x380
[<00000000aa06f36e>] genl_family_rcv_msg_doit+0xea/0x150
[<000000008f583bc4>] genl_rcv_msg+0xdc/0x1e0
[<00000000fa10e377>] netlink_rcv_skb+0x50/0x100
[<000000004959cece>] genl_rcv+0x24/0x40
[<000000004699ac7f>] netlink_unicast+0x23e/0x360
[<00000000c153573e>] netlink_sendmsg+0x24e/0x4b0
[<000000006f4aa380>] sock_sendmsg+0x62/0x70
[<00000000d0068654>] ____sys_sendmsg+0x230/0x270
[<0000000012dacf7d>] ___sys_sendmsg+0x88/0xd0
[<0000000011776020>] __sys_sendmsg+0x59/0xa0
[<000000002e8f2dc1>] do_syscall_64+0x3b/0x90
[<000000003243e7cb>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: fix memory leak at failed datapath creation\n\novs_dp_cmd_new()-\u003eovs_dp_change()-\u003eovs_dp_set_upcall_portids()\nallocates array via kmalloc.\nIf for some reason new_vport() fails during ovs_dp_cmd_new()\ndp-\u003eupcall_portids must be freed.\nAdd missing kfree.\n\nKmemleak example:\nunreferenced object 0xffff88800c382500 (size 64):\n comm \"dump_state\", pid 323, jiffies 4294955418 (age 104.347s)\n hex dump (first 32 bytes):\n 5e c2 79 e4 1f 7a 38 c7 09 21 38 0c 80 88 ff ff ^.y..z8..!8.....\n 03 00 00 00 0a 00 00 00 14 00 00 00 28 00 00 00 ............(...\n backtrace:\n [\u003c0000000071bebc9f\u003e] ovs_dp_set_upcall_portids+0x38/0xa0\n [\u003c000000000187d8bd\u003e] ovs_dp_change+0x63/0xe0\n [\u003c000000002397e446\u003e] ovs_dp_cmd_new+0x1f0/0x380\n [\u003c00000000aa06f36e\u003e] genl_family_rcv_msg_doit+0xea/0x150\n [\u003c000000008f583bc4\u003e] genl_rcv_msg+0xdc/0x1e0\n [\u003c00000000fa10e377\u003e] netlink_rcv_skb+0x50/0x100\n [\u003c000000004959cece\u003e] genl_rcv+0x24/0x40\n [\u003c000000004699ac7f\u003e] netlink_unicast+0x23e/0x360\n [\u003c00000000c153573e\u003e] netlink_sendmsg+0x24e/0x4b0\n [\u003c000000006f4aa380\u003e] sock_sendmsg+0x62/0x70\n [\u003c00000000d0068654\u003e] ____sys_sendmsg+0x230/0x270\n [\u003c0000000012dacf7d\u003e] ___sys_sendmsg+0x88/0xd0\n [\u003c0000000011776020\u003e] __sys_sendmsg+0x59/0xa0\n [\u003c000000002e8f2dc1\u003e] do_syscall_64+0x3b/0x90\n [\u003c000000003243e7cb\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: openvswitch: se corrige una fuga de memoria al crear una ruta de datos fallida. ovs_dp_cmd_new()-\u0026gt;ovs_dp_change()-\u0026gt;ovs_dp_set_upcall_portids() asigna una matriz mediante kmalloc. Si por alguna raz\u00f3n new_vport() falla durante ovs_dp_cmd_new(), se debe liberar dp-\u0026gt;upcall_portids. Se a\u00f1ade la falta de kfree. Ejemplo de Kmemleak: objeto sin referencia 0xffff88800c382500 (tama\u00f1o 64): comm \"dump_state\", pid 323, jiffies 4294955418 (edad 104.347s) volcado hexadecimal (primeros 32 bytes): 5e c2 79 e4 1f 7a 38 c7 09 21 38 0c 80 88 ff ff ^.y..z8..!8..... 03 00 00 00 0a 00 00 00 14 00 00 00 28 00 00 00 ............(... backtrace: [\u0026lt;0000000071bebc9f\u0026gt;] ovs_dp_set_upcall_portids+0x38/0xa0 [\u0026lt;000000000187d8bd\u0026gt;] ovs_dp_change+0x63/0xe0 [\u0026lt;000000002397e446\u0026gt;] ovs_dp_cmd_new+0x1f0/0x380 [\u0026lt;00000000aa06f36e\u0026gt;] genl_family_rcv_msg_doit+0xea/0x150 [\u0026lt;000000008f583bc4\u0026gt;] genl_rcv_msg+0xdc/0x1e0 [\u0026lt;00000000fa10e377\u0026gt;] netlink_rcv_skb+0x50/0x100 [\u0026lt;000000004959cece\u0026gt;] genl_rcv+0x24/0x40 [\u0026lt;000000004699ac7f\u0026gt;] netlink_unicast+0x23e/0x360 [\u0026lt;00000000c153573e\u0026gt;] netlink_sendmsg+0x24e/0x4b0 [\u0026lt;000000006f4aa380\u0026gt;] sock_sendmsg+0x62/0x70 [\u0026lt;00000000d0068654\u0026gt;] ____sys_sendmsg+0x230/0x270 [\u0026lt;0000000012dacf7d\u0026gt;] ___sys_sendmsg+0x88/0xd0 [\u0026lt;0000000011776020\u0026gt;] __sys_sendmsg+0x59/0xa0 [\u0026lt;000000002e8f2dc1\u0026gt;] do_syscall_64+0x3b/0x90 [\u0026lt;000000003243e7cb\u0026gt;] entry_SYSCALL_64_after_hwframe+0x63/0xcd "
}
],
"id": "CVE-2022-49959",
"lastModified": "2025-06-18T13:46:52.973",
"metrics": {},
"published": "2025-06-18T11:15:23.127",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a87406f4adee9c53b311d8a1ba2849c69e29a6d0"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/c0c1c0241917459644326a1a3102207c871ae159"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ca54b2bfaab385778e55a9fd33f6c31e7f743b48"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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