fkie_cve-2021-47250
Vulnerability from fkie_nvd
Published
2024-05-21 15:15
Modified
2024-12-30 19:00
Severity ?
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: ipv4: fix memory leak in netlbl_cipsov4_add_std Reported by syzkaller: BUG: memory leak unreferenced object 0xffff888105df7000 (size 64): comm "syz-executor842", pid 360, jiffies 4294824824 (age 22.546s) 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: [<00000000e67ed558>] kmalloc include/linux/slab.h:590 [inline] [<00000000e67ed558>] kzalloc include/linux/slab.h:720 [inline] [<00000000e67ed558>] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline] [<00000000e67ed558>] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416 [<0000000006040154>] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739 [<00000000204d7a1c>] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] [<00000000204d7a1c>] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800 [<00000000c0d6a995>] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504 [<00000000d78b9d2c>] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 [<000000009733081b>] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] [<000000009733081b>] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340 [<00000000d5fd43b8>] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929 [<000000000a2d1e40>] sock_sendmsg_nosec net/socket.c:654 [inline] [<000000000a2d1e40>] sock_sendmsg+0x139/0x170 net/socket.c:674 [<00000000321d1969>] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350 [<00000000964e16bc>] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404 [<000000001615e288>] __sys_sendmsg+0xd3/0x190 net/socket.c:2433 [<000000004ee8b6a5>] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47 [<00000000171c7cee>] entry_SYSCALL_64_after_hwframe+0x44/0xae The memory of doi_def->map.std pointing is allocated in netlbl_cipsov4_add_std, but no place has freed it. It should be freed in cipso_v4_doi_free which frees the cipso DOI resource.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/086e92b1d68c6338535f715aad173f8cf4bfbc8cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ffb460be3abac86f884a8c548bb02724ec370f4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/212166510582631994be4f4b3fe15e10a03c1dd4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/398a24447eb60f060c8994221cb5ae6caf355fa1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5340858147e3dc60913fb3dd0cbb758ec4a26e66Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6dcea66d3bb519b426282588f38e884e07893c1fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d612c3f3fae221e7ea736d196581c2217304bbbcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/deeeb65c6ee404f2d1fb80b38b2730645c0f4663Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/086e92b1d68c6338535f715aad173f8cf4bfbc8cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0ffb460be3abac86f884a8c548bb02724ec370f4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/212166510582631994be4f4b3fe15e10a03c1dd4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/398a24447eb60f060c8994221cb5ae6caf355fa1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5340858147e3dc60913fb3dd0cbb758ec4a26e66Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6dcea66d3bb519b426282588f38e884e07893c1fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d612c3f3fae221e7ea736d196581c2217304bbbcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/deeeb65c6ee404f2d1fb80b38b2730645c0f4663Patch
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 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13
linux linux_kernel 5.13


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipv4: fix memory leak in netlbl_cipsov4_add_std\n\nReported by syzkaller:\nBUG: memory leak\nunreferenced object 0xffff888105df7000 (size 64):\ncomm \"syz-executor842\", pid 360, jiffies 4294824824 (age 22.546s)\nhex dump (first 32 bytes):\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\nbacktrace:\n[\u003c00000000e67ed558\u003e] kmalloc include/linux/slab.h:590 [inline]\n[\u003c00000000e67ed558\u003e] kzalloc include/linux/slab.h:720 [inline]\n[\u003c00000000e67ed558\u003e] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [inline]\n[\u003c00000000e67ed558\u003e] netlbl_cipsov4_add+0x390/0x2340 net/netlabel/netlabel_cipso_v4.c:416\n[\u003c0000000006040154\u003e] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739\n[\u003c00000000204d7a1c\u003e] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]\n[\u003c00000000204d7a1c\u003e] genl_rcv_msg+0x2bf/0x4f0 net/netlink/genetlink.c:800\n[\u003c00000000c0d6a995\u003e] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504\n[\u003c00000000d78b9d2c\u003e] genl_rcv+0x24/0x40 net/netlink/genetlink.c:811\n[\u003c000000009733081b\u003e] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]\n[\u003c000000009733081b\u003e] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340\n[\u003c00000000d5fd43b8\u003e] netlink_sendmsg+0x789/0xc70 net/netlink/af_netlink.c:1929\n[\u003c000000000a2d1e40\u003e] sock_sendmsg_nosec net/socket.c:654 [inline]\n[\u003c000000000a2d1e40\u003e] sock_sendmsg+0x139/0x170 net/socket.c:674\n[\u003c00000000321d1969\u003e] ____sys_sendmsg+0x658/0x7d0 net/socket.c:2350\n[\u003c00000000964e16bc\u003e] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404\n[\u003c000000001615e288\u003e] __sys_sendmsg+0xd3/0x190 net/socket.c:2433\n[\u003c000000004ee8b6a5\u003e] do_syscall_64+0x37/0x90 arch/x86/entry/common.c:47\n[\u003c00000000171c7cee\u003e] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe memory of doi_def-\u003emap.std pointing is allocated in\nnetlbl_cipsov4_add_std, but no place has freed it. It should be\nfreed in cipso_v4_doi_free which frees the cipso DOI resource."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ipv4: corrige la p\u00e9rdida de memoria en netlbl_cipsov4_add_std. Reportado por syzkaller: BUG: p\u00e9rdida de memoria objeto sin referencia 0xffff888105df7000 (tama\u00f1o 64): comm \"syz-executor842\", pid 360, jiffies 4294824824 ( edad 22,546 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 ................ backtrace: [\u0026lt;00000000e67ed558\u0026gt;] kmalloc include/linux/slab.h:590 [en l\u00ednea] [\u0026lt;00000000e67ed558\u0026gt; ] kzalloc include/linux/slab.h:720 [en l\u00ednea] [\u0026lt;00000000e67ed558\u0026gt;] netlbl_cipsov4_add_std net/netlabel/netlabel_cipso_v4.c:145 [en l\u00ednea] [\u0026lt;00000000e67ed558\u0026gt;] netlbl_cipsov4_add+0x390/0x234 0 net/netlabel/netlabel_cipso_v4.c: 416 [\u0026lt;0000000006040154\u0026gt;] genl_family_rcv_msg_doit.isra.0+0x20e/0x320 net/netlink/genetlink.c:739 [\u0026lt;00000000204d7a1c\u0026gt;] genl_family_rcv_msg net/netlink/genetlink.c:783 [en l\u00ednea] 00000204d7a1c\u0026gt;] genl_rcv_msg+0x2bf /0x4f0 net/netlink/genetlink.c:800 [\u0026lt;00000000c0d6a995\u0026gt;] netlink_rcv_skb+0x134/0x3d0 net/netlink/af_netlink.c:2504 [\u0026lt;00000000d78b9d2c\u0026gt;] genl_rcv+0x24/0x40 11 [ \u0026lt;000000009733081b\u0026gt;] netlink_unicast_kernel net/netlink/af_netlink.c:1314 [en l\u00ednea] [\u0026lt;000000009733081b\u0026gt;] netlink_unicast+0x4a0/0x6a0 net/netlink/af_netlink.c:1340 [\u0026lt;00000000d5fd43b8\u0026gt;] enviar mensaje+0x789/0xc70 net/netlink/ af_netlink.c:1929 [\u0026lt;000000000a2d1e40\u0026gt;] sock_sendmsg_nosec net/socket.c:654 [en l\u00ednea] [\u0026lt;000000000a2d1e40\u0026gt;] sock_sendmsg+0x139/0x170 net/socket.c:674 [\u0026lt;00000000321d19 69\u0026gt;] ____sys_sendmsg+0x658/0x7d0 neto/ socket.c:2350 [\u0026lt;00000000964e16bc\u0026gt;] ___sys_sendmsg+0xf8/0x170 net/socket.c:2404 [\u0026lt;000000001615e288\u0026gt;] __sys_sendmsg+0xd3/0x190 net/socket.c:2433 4ee8b6a5\u0026gt;] do_syscall_64+0x37/0x90 arco /x86/entry/common.c:47 [\u0026lt;00000000171c7cee\u0026gt;] Entry_SYSCALL_64_after_hwframe+0x44/0xae La memoria de apuntamiento doi_def-\u0026gt;map.std est\u00e1 asignada en netlbl_cipsov4_add_std, pero no se ha liberado ning\u00fan lugar. Debe liberarse en cipso_v4_doi_free, lo que libera el recurso cipso DOI."
    }
  ],
  "id": "CVE-2021-47250",
  "lastModified": "2024-12-30T19:00:27.217",
  "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-05-21T15:15:13.930",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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