FKIE_CVE-2023-52977

Vulnerability from fkie_nvd - Published: 2025-03-27 17:15 - Updated: 2025-10-01 18:15
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow memory leak in ovs_flow_cmd_new Syzkaller reports a memory leak of new_flow in ovs_flow_cmd_new() as it is not freed when an allocation of a key fails. BUG: memory leak unreferenced object 0xffff888116668000 (size 632): comm "syz-executor231", pid 1090, jiffies 4294844701 (age 18.871s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000defa3494>] kmem_cache_zalloc include/linux/slab.h:654 [inline] [<00000000defa3494>] ovs_flow_alloc+0x19/0x180 net/openvswitch/flow_table.c:77 [<00000000c67d8873>] ovs_flow_cmd_new+0x1de/0xd40 net/openvswitch/datapath.c:957 [<0000000010a539a8>] genl_family_rcv_msg_doit+0x22d/0x330 net/netlink/genetlink.c:739 [<00000000dff3302d>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] [<00000000dff3302d>] genl_rcv_msg+0x328/0x590 net/netlink/genetlink.c:800 [<000000000286dd87>] netlink_rcv_skb+0x153/0x430 net/netlink/af_netlink.c:2515 [<0000000061fed410>] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 [<000000009dc0f111>] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] [<000000009dc0f111>] netlink_unicast+0x545/0x7f0 net/netlink/af_netlink.c:1339 [<000000004a5ee816>] netlink_sendmsg+0x8e7/0xde0 net/netlink/af_netlink.c:1934 [<00000000482b476f>] sock_sendmsg_nosec net/socket.c:651 [inline] [<00000000482b476f>] sock_sendmsg+0x152/0x190 net/socket.c:671 [<00000000698574ba>] ____sys_sendmsg+0x70a/0x870 net/socket.c:2356 [<00000000d28d9e11>] ___sys_sendmsg+0xf3/0x170 net/socket.c:2410 [<0000000083ba9120>] __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 [<00000000c00628f8>] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 [<000000004abfdcf4>] entry_SYSCALL_64_after_hwframe+0x61/0xc6 To fix this the patch rearranges the goto labels to reflect the order of object allocations and adds appropriate goto statements on the error paths. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c598aed445eb45b0ee7ba405f7ece99ee349c30Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ac653cf886cdfc082708c82dc6ac6115cebd2eePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/70154489f531587996f3e9d7cceeee65cff0001dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/70d40674a549d498bd63d5432acf46205da1534bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af4e720bc00a2653f7b9df21755b9978b3d7f386Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed6c5e8caf55778500202775167e8ccdb1a030cbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f423c2efd51d7eb1d143c2be7eea233241d9bbbfPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: fix flow memory leak in ovs_flow_cmd_new\n\nSyzkaller reports a memory leak of new_flow in ovs_flow_cmd_new() as it is\nnot freed when an allocation of a key fails.\n\nBUG: memory leak\nunreferenced object 0xffff888116668000 (size 632):\n  comm \"syz-executor231\", pid 1090, jiffies 4294844701 (age 18.871s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c00000000defa3494\u003e] kmem_cache_zalloc include/linux/slab.h:654 [inline]\n    [\u003c00000000defa3494\u003e] ovs_flow_alloc+0x19/0x180 net/openvswitch/flow_table.c:77\n    [\u003c00000000c67d8873\u003e] ovs_flow_cmd_new+0x1de/0xd40 net/openvswitch/datapath.c:957\n    [\u003c0000000010a539a8\u003e] genl_family_rcv_msg_doit+0x22d/0x330 net/netlink/genetlink.c:739\n    [\u003c00000000dff3302d\u003e] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]\n    [\u003c00000000dff3302d\u003e] genl_rcv_msg+0x328/0x590 net/netlink/genetlink.c:800\n    [\u003c000000000286dd87\u003e] netlink_rcv_skb+0x153/0x430 net/netlink/af_netlink.c:2515\n    [\u003c0000000061fed410\u003e] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811\n    [\u003c000000009dc0f111\u003e] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\n    [\u003c000000009dc0f111\u003e] netlink_unicast+0x545/0x7f0 net/netlink/af_netlink.c:1339\n    [\u003c000000004a5ee816\u003e] netlink_sendmsg+0x8e7/0xde0 net/netlink/af_netlink.c:1934\n    [\u003c00000000482b476f\u003e] sock_sendmsg_nosec net/socket.c:651 [inline]\n    [\u003c00000000482b476f\u003e] sock_sendmsg+0x152/0x190 net/socket.c:671\n    [\u003c00000000698574ba\u003e] ____sys_sendmsg+0x70a/0x870 net/socket.c:2356\n    [\u003c00000000d28d9e11\u003e] ___sys_sendmsg+0xf3/0x170 net/socket.c:2410\n    [\u003c0000000083ba9120\u003e] __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439\n    [\u003c00000000c00628f8\u003e] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46\n    [\u003c000000004abfdcf4\u003e] entry_SYSCALL_64_after_hwframe+0x61/0xc6\n\nTo fix this the patch rearranges the goto labels to reflect the order of\nobject allocations and adds appropriate goto statements on the error\npaths.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: openvswitch: corrige p\u00e9rdida de memoria de flujo en ovs_flow_cmd_new Syzkaller informa una p\u00e9rdida de memoria de new_flow en ovs_flow_cmd_new() ya que no se libera cuando falla la asignaci\u00f3n de una clave. ERROR: Fuga de memoria, objeto no referenciado 0xffff888116668000 (tama\u00f1o 632): comunicaci\u00f3n \"syz-executor231\", pid 1090, jiffies 4294844701 (edad 18.871 s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ seguimiento inverso: [\u0026lt;00000000defa3494\u0026gt;] kmem_cache_zalloc include/linux/slab.h:654 [en l\u00ednea] [\u0026lt;00000000defa3494\u0026gt;] ovs_flow_alloc+0x19/0x180 net/openvswitch/flow_table.c:77 [\u0026lt;00000000c67d8873\u0026gt;] ovs_flow_cmd_new+0x1de/0xd40 net/openvswitch/datapath.c:957 [\u0026lt;0000000010a539a8\u0026gt;] genl_family_rcv_msg_doit+0x22d/0x330 net/netlink/genetlink.c:739 [\u0026lt;00000000dff3302d\u0026gt;] genl_family_rcv_msg net/netlink/genetlink.c:783 [en l\u00ednea] [\u0026lt;00000000dff3302d\u0026gt;] genl_rcv_msg+0x328/0x590 net/netlink/genetlink.c:800 [\u0026lt;000000000286dd87\u0026gt;] netlink_rcv_skb+0x153/0x430 net/netlink/af_netlink.c:2515 [\u0026lt;0000000061fed410\u0026gt;] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 [\u0026lt;000000009dc0f111\u0026gt;] netlink_unicast_kernel net/netlink/af_netlink.c:1313 [en l\u00ednea] [\u0026lt;000000009dc0f111\u0026gt;] netlink_unicast+0x545/0x7f0 net/netlink/af_netlink.c:1339 [\u0026lt;000000004a5ee816\u0026gt;] netlink_sendmsg+0x8e7/0xde0 net/netlink/af_netlink.c:1934 [\u0026lt;00000000482b476f\u0026gt;] sock_sendmsg_nosec net/socket.c:651 [en l\u00ednea] [\u0026lt;00000000482b476f\u0026gt;] sock_sendmsg+0x152/0x190 net/socket.c:671 [\u0026lt;00000000698574ba\u0026gt;] ____sys_sendmsg+0x70a/0x870 net/socket.c:2356 [\u0026lt;00000000d28d9e11\u0026gt;] ___sys_sendmsg+0xf3/0x170 net/socket.c:2410 [\u0026lt;0000000083ba9120\u0026gt;] __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 [\u0026lt;00000000c00628f8\u0026gt;] do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 [\u0026lt;000000004abfdcf4\u0026gt;] entry_SYSCALL_64_after_hwframe+0x61/0xc6 Para solucionar esto, el parche reorganiza las etiquetas goto para reflejar el orden de asignaci\u00f3n de objetos y a\u00f1ade instrucciones goto adecuadas en las rutas de error. Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller."
    }
  ],
  "id": "CVE-2023-52977",
  "lastModified": "2025-10-01T18:15:34.343",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
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  },
  "published": "2025-03-27T17:15:44.793",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    }
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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