CVE-2022-48954

{
  "id": "CVE-2022-48954",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-48954",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-22T13:21:15.283243Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "f7936b7b2663c99a096a5c432ba96ab1e91a6c0f",
              "lessThan": "db6343a5b0d9661f2dd76f653c6d274d38234d2b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f7936b7b2663c99a096a5c432ba96ab1e91a6c0f",
              "lessThan": "bde0dfc7c4569406a6ddeec363d04a1df7b3073f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f7936b7b2663c99a096a5c432ba96ab1e91a6c0f",
              "lessThan": "ebaaadc332cd21e9df4dcf9ce12552d9354bbbe4",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/s390/net/qeth_l2_main.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.83",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/s390/net/qeth_l2_main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-10-21T20:15:06.783",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/bde0dfc7c4569406a6ddeec363d04a1df7b3073f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/db6343a5b0d9661f2dd76f653c6d274d38234d2b",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ebaaadc332cd21e9df4dcf9ce12552d9354bbbe4",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/qeth: fix use-after-free in hsci\n\nKASAN found that addr was dereferenced after br2dev_event_work was freed.\n\n==================================================================\nBUG: KASAN: use-after-free in qeth_l2_br2dev_worker+0x5ba/0x6b0\nRead of size 1 at addr 00000000fdcea440 by task kworker/u760:4/540\nCPU: 17 PID: 540 Comm: kworker/u760:4 Tainted: G            E      6.1.0-20221128.rc7.git1.5aa3bed4ce83.300.fc36.s390x+kasan #1\nHardware name: IBM 8561 T01 703 (LPAR)\nWorkqueue: 0.0.8000_event qeth_l2_br2dev_worker\nCall Trace:\n [<000000016944d4ce>] dump_stack_lvl+0xc6/0xf8\n [<000000016942cd9c>] print_address_description.constprop.0+0x34/0x2a0\n [<000000016942d118>] print_report+0x110/0x1f8\n [<0000000167a7bd04>] kasan_report+0xfc/0x128\n [<000000016938d79a>] qeth_l2_br2dev_worker+0x5ba/0x6b0\n [<00000001673edd1e>] process_one_work+0x76e/0x1128\n [<00000001673ee85c>] worker_thread+0x184/0x1098\n [<000000016740718a>] kthread+0x26a/0x310\n [<00000001672c606a>] __ret_from_fork+0x8a/0xe8\n [<00000001694711da>] ret_from_fork+0xa/0x40\nAllocated by task 108338:\n kasan_save_stack+0x40/0x68\n kasan_set_track+0x36/0x48\n __kasan_kmalloc+0xa0/0xc0\n qeth_l2_switchdev_event+0x25a/0x738\n atomic_notifier_call_chain+0x9c/0xf8\n br_switchdev_fdb_notify+0xf4/0x110\n fdb_notify+0x122/0x180\n fdb_add_entry.constprop.0.isra.0+0x312/0x558\n br_fdb_add+0x59e/0x858\n rtnl_fdb_add+0x58a/0x928\n rtnetlink_rcv_msg+0x5f8/0x8d8\n netlink_rcv_skb+0x1f2/0x408\n netlink_unicast+0x570/0x790\n netlink_sendmsg+0x752/0xbe0\n sock_sendmsg+0xca/0x110\n ____sys_sendmsg+0x510/0x6a8\n ___sys_sendmsg+0x12a/0x180\n __sys_sendmsg+0xe6/0x168\n __do_sys_socketcall+0x3c8/0x468\n do_syscall+0x22c/0x328\n __do_syscall+0x94/0xf0\n system_call+0x82/0xb0\nFreed by task 540:\n kasan_save_stack+0x40/0x68\n kasan_set_track+0x36/0x48\n kasan_save_free_info+0x4c/0x68\n ____kasan_slab_free+0x14e/0x1a8\n __kasan_slab_free+0x24/0x30\n __kmem_cache_free+0x168/0x338\n qeth_l2_br2dev_worker+0x154/0x6b0\n process_one_work+0x76e/0x1128\n worker_thread+0x184/0x1098\n kthread+0x26a/0x310\n __ret_from_fork+0x8a/0xe8\n ret_from_fork+0xa/0x40\nLast potentially related work creation:\n kasan_save_stack+0x40/0x68\n __kasan_record_aux_stack+0xbe/0xd0\n insert_work+0x56/0x2e8\n __queue_work+0x4ce/0xd10\n queue_work_on+0xf4/0x100\n qeth_l2_switchdev_event+0x520/0x738\n atomic_notifier_call_chain+0x9c/0xf8\n br_switchdev_fdb_notify+0xf4/0x110\n fdb_notify+0x122/0x180\n fdb_add_entry.constprop.0.isra.0+0x312/0x558\n br_fdb_add+0x59e/0x858\n rtnl_fdb_add+0x58a/0x928\n rtnetlink_rcv_msg+0x5f8/0x8d8\n netlink_rcv_skb+0x1f2/0x408\n netlink_unicast+0x570/0x790\n netlink_sendmsg+0x752/0xbe0\n sock_sendmsg+0xca/0x110\n ____sys_sendmsg+0x510/0x6a8\n ___sys_sendmsg+0x12a/0x180\n __sys_sendmsg+0xe6/0x168\n __do_sys_socketcall+0x3c8/0x468\n do_syscall+0x22c/0x328\n __do_syscall+0x94/0xf0\n system_call+0x82/0xb0\nSecond to last potentially related work creation:\n kasan_save_stack+0x40/0x68\n __kasan_record_aux_stack+0xbe/0xd0\n kvfree_call_rcu+0xb2/0x760\n kernfs_unlink_open_file+0x348/0x430\n kernfs_fop_release+0xc2/0x320\n __fput+0x1ae/0x768\n task_work_run+0x1bc/0x298\n exit_to_user_mode_prepare+0x1a0/0x1a8\n __do_syscall+0x94/0xf0\n system_call+0x82/0xb0\nThe buggy address belongs to the object at 00000000fdcea400\n which belongs to the cache kmalloc-96 of size 96\nThe buggy address is located 64 bytes inside of\n 96-byte region [00000000fdcea400, 00000000fdcea460)\nThe buggy address belongs to the physical page:\npage:000000005a9c26e8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfdcea\nflags: 0x3ffff00000000200(slab|node=0|zone=1|lastcpupid=0x1ffff)\nraw: 3ffff00000000200 0000000000000000 0000000100000122 000000008008cc00\nraw: 0000000000000000 0020004100000000 ffffffff00000001 0000000000000000\npage dumped because: kasan: bad access detected\nMemory state around the buggy address:\n 00000000fdcea300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n 00000000fdcea380: fb fb fb fb fb fb f\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/qeth: se corrige el use after free en hsci KASAN descubrió que addr fue desreferenciado después de que se liberó br2dev_event_work. ===================================================================== ERROR: KASAN: use after free en qeth_l2_br2dev_worker+0x5ba/0x6b0 Lectura de tamaño 1 en la dirección 00000000fdcea440 por la tarea kworker/u760:4/540 CPU: 17 PID: 540 Comm: kworker/u760:4 Contaminado: GE 6.1.0-20221128.rc7.git1.5aa3bed4ce83.300.fc36.s390x+kasan #1 Nombre del hardware: IBM 8561 T01 703 (LPAR) Cola de trabajo: 0.0.8000_evento qeth_l2_br2dev_worker Seguimiento de llamadas: [&lt;000000016944d4ce&gt;] nivel_pila_volcado+0xc6/0xf8 [&lt;000000016942cd9c&gt;] descripción_dirección_impresión.constprop.0+0x34/0x2a0 [&lt;000000016942d118&gt;] informe_impresión+0x110/0x1f8 [&lt;0000000167a7bd04&gt;] informe_kasan+0xfc/0x128 [&lt;000000016938d79a&gt;] qeth_l2_br2dev_worker+0x5ba/0x6b0 [&lt;00000001673edd1e&gt;] proceso_uno_trabajo+0x76e/0x1128 [&lt;00000001673ee85c&gt;] subproceso_trabajador+0x184/0x1098 [&lt;000000016740718a&gt;] subproceso_k+0x26a/0x310 [&lt;00000001672c606a&gt;] __ret_from_fork+0x8a/0xe8 [&lt;00000001694711da&gt;] ret_from_fork+0xa/0x40 Asignado por la tarea 108338: kasan_save_stack+0x40/0x68 kasan_set_track+0x36/0x48 __kasan_kmalloc+0xa0/0xc0 qeth_l2_switchdev_event+0x25a/0x738 cadena_de_llamadas_de_notificador_atómico+0x9c/0xf8 br_switchdev_fdb_notify+0xf4/0x110 fdb_notify+0x122/0x180 fdb_add_entry.constprop.0.isra.0+0x312/0x558 br_fdb_add+0x59e/0x858 rtnl_fdb_add+0x58a/0x928 rtnetlink_rcv_msg+0x5f8/0x8d8 netlink_rcv_skb+0x1f2/0x408 netlink_unicast+0x570/0x790 netlink_sendmsg+0x752/0xbe0 sock_sendmsg+0xca/0x110 ____sys_sendmsg+0x510/0x6a8 ___sys_sendmsg+0x12a/0x180 __sys_sendmsg+0xe6/0x168 __do_sys_socketcall+0x3c8/0x468 do_syscall+0x22c/0x328 __do_syscall+0x94/0xf0 llamada_sistema+0x82/0xb0 Liberado por la tarea 540: kasan_save_stack+0x40/0x68 kasan_set_track+0x36/0x48 kasan_save_free_info+0x4c/0x68 ____kasan_slab_free+0x14e/0x1a8 __kasan_slab_free+0x24/0x30 __kmem_cache_free+0x168/0x338 qeth_l2_br2dev_worker+0x154/0x6b0 process_one_work+0x76e/0x1128 worker_thread+0x184/0x1098 kthread+0x26a/0x310 __ret_from_fork+0x8a/0xe8 ret_from_fork+0xa/0x40 Última creación de trabajo potencialmente relacionada: kasan_save_stack+0x40/0x68 __kasan_record_aux_stack+0xbe/0xd0 insert_work+0x56/0x2e8 __queue_work+0x4ce/0xd10 queue_work_on+0xf4/0x100 qeth_l2_switchdev_event+0x520/0x738 cadena de llamada de notificador atómico+0x9c/0xf8 br_switchdev_fdb_notify+0xf4/0x110 fdb_notify+0x122/0x180 fdb_add_entry.constprop.0.isra.0+0x312/0x558 br_fdb_add+0x59e/0x858 rtnl_fdb_add+0x58a/0x928 rtnetlink_rcv_msg+0x5f8/0x8d8 netlink_rcv_skb+0x1f2/0x408 netlink_unicast+0x570/0x790 netlink_sendmsg+0x752/0xbe0 sock_sendmsg+0xca/0x110 ____sys_sendmsg+0x510/0x6a8 ___sys_sendmsg+0x12a/0x180 __sys_sendmsg+0xe6/0x168 __do_sys_socketcall+0x3c8/0x468 do_syscall+0x22c/0x328 __do_syscall+0x94/0xf0 system_call+0x82/0xb0 Penúltima creación de trabajo potencialmente relacionado: kasan_save_stack+0x40/0x68 __kasan_record_aux_stack+0xbe/0xd0 kvfree_call_rcu+0xb2/0x760 kernfs_unlink_open_file+0x348/0x430 kernfs_fop_release+0xc2/0x320 __fput+0x1ae/0x768 task_work_run+0x1bc/0x298 exit_to_user_mode_prepare+0x1a0/0x1a8 __do_syscall+0x94/0xf0 system_call+0x82/0xb0 La dirección con errores pertenece al objeto en 00000000fdcea400 que pertenece a la caché kmalloc-96 de tamaño 96 La dirección con errores se encuentra 64 bytes dentro de la región de 96 bytes [00000000fdcea400, 00000000fdcea460) La dirección con errores pertenece a la página física: page:000000005a9c26e8 refcount:1 mapcount:0 mapping:0000000000000000 índice:0x0 pfn:0xfdcea flags: 0x3ffff00000000200(slab|node=0|zone=1|lastcpupid=0x1ffff) raw: 3ffff00000000200 0000000000000000 0000000100000122 000000008008cc00 raw: 0000000000000000 0020004100000000 ffffffff00000001 0000000000000000 página volcada porque: kasan: mal acceso detectado Estado de la memoria alrededor de la dirección con errores: 00000000fdcea300: fb ..."
    }
  ],
  "lastModified": "2026-08-04T10:17:28.130",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "5.15.83",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}