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CVE-2022-49959 (GCVE-0-2022-49959)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-05-11 19:09
VLAI
Title
openvswitch: fix memory leak at failed datapath creation
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
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b83d23a2a38b1770da0491257ae81d52307f7816 , < ca54b2bfaab385778e55a9fd33f6c31e7f743b48 (git)
Affected: b83d23a2a38b1770da0491257ae81d52307f7816 , < c0c1c0241917459644326a1a3102207c871ae159 (git)
Affected: b83d23a2a38b1770da0491257ae81d52307f7816 , < a87406f4adee9c53b311d8a1ba2849c69e29a6d0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.66 , ≤ 5.15.* (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/datapath.c"
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      "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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:09:59.282Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/ca54b2bfaab385778e55a9fd33f6c31e7f743b48"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0c1c0241917459644326a1a3102207c871ae159"
        },
        {
          "url": "https://git.kernel.org/stable/c/a87406f4adee9c53b311d8a1ba2849c69e29a6d0"
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      ],
      "title": "openvswitch: fix memory leak at failed datapath creation",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49959",
    "datePublished": "2025-06-18T11:00:20.749Z",
    "dateReserved": "2025-06-18T10:57:27.383Z",
    "dateUpdated": "2026-05-11T19:09:59.282Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49959",
      "date": "2026-09-15",
      "epss": "0.00174",
      "percentile": "0.07047"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49959\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T11:15:23.127\",\"lastModified\":\"2026-06-17T05:19:37.580\",\"vulnStatus\":\"Analyzed\",\"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 \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/openvswitch/datapath.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b83d23a2a38b1770da0491257ae81d52307f7816\",\"lessThan\":\"ca54b2bfaab385778e55a9fd33f6c31e7f743b48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b83d23a2a38b1770da0491257ae81d52307f7816\",\"lessThan\":\"c0c1c0241917459644326a1a3102207c871ae159\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b83d23a2a38b1770da0491257ae81d52307f7816\",\"lessThan\":\"a87406f4adee9c53b311d8a1ba2849c69e29a6d0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/openvswitch/datapath.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.66\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19.8\",\"lessThanOrEqual\":\"5.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15\",\"versionEndExcluding\":\"5.15.66\",\"matchCriteriaId\":\"92264A00-0618-4F99-926E-A01E06AFEBEC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.19.8\",\"matchCriteriaId\":\"7FEC7656-4CE2-424C-8830-EDB160E701C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E8BD11A3-8643-49B6-BADE-5029A0117325\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5F0AD220-F6A9-4012-8636-155F1B841FAD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"A46498B3-78E1-4623-AAE1-94D29A42BE4E\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a87406f4adee9c53b311d8a1ba2849c69e29a6d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c0c1c0241917459644326a1a3102207c871ae159\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca54b2bfaab385778e55a9fd33f6c31e7f743b48\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:38:10+00:00",
      "cve": "CVE-2022-49959",
      "id": "CVE-2022-49959",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "321",
      "product_status:known_affected": "80",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: openvswitch: fix memory leak at failed datapath creation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49959.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-08-31T01:27:40Z",
      "cve": "CVE-2022-49959",
      "id": "CVE-2022-49959",
      "initial_release_date": "2025-06-19T03:45:33Z",
      "product_status:known_not_affected": "509",
      "product_status:recommended": "47",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49959",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49959.json",
      "version": "12"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.