cve-2022-48913
Vulnerability from cvelistv5
Published
2024-08-22 01:31
Modified
2024-12-19 08:10
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: blktrace: fix use after free for struct blk_trace When tracing the whole disk, 'dropped' and 'msg' will be created under 'q->debugfs_dir' and 'bt->dir' is NULL, thus blk_trace_free() won't remove those files. What's worse, the following UAF can be triggered because of accessing stale 'dropped' and 'msg': ================================================================== BUG: KASAN: use-after-free in blk_dropped_read+0x89/0x100 Read of size 4 at addr ffff88816912f3d8 by task blktrace/1188 CPU: 27 PID: 1188 Comm: blktrace Not tainted 5.17.0-rc4-next-20220217+ #469 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-4 Call Trace: <TASK> dump_stack_lvl+0x34/0x44 print_address_description.constprop.0.cold+0xab/0x381 ? blk_dropped_read+0x89/0x100 ? blk_dropped_read+0x89/0x100 kasan_report.cold+0x83/0xdf ? blk_dropped_read+0x89/0x100 kasan_check_range+0x140/0x1b0 blk_dropped_read+0x89/0x100 ? blk_create_buf_file_callback+0x20/0x20 ? kmem_cache_free+0xa1/0x500 ? do_sys_openat2+0x258/0x460 full_proxy_read+0x8f/0xc0 vfs_read+0xc6/0x260 ksys_read+0xb9/0x150 ? vfs_write+0x3d0/0x3d0 ? fpregs_assert_state_consistent+0x55/0x60 ? exit_to_user_mode_prepare+0x39/0x1e0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fbc080d92fd Code: ce 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 1 RSP: 002b:00007fbb95ff9cb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fbb95ff9dc0 RCX: 00007fbc080d92fd RDX: 0000000000000100 RSI: 00007fbb95ff9cc0 RDI: 0000000000000045 RBP: 0000000000000045 R08: 0000000000406299 R09: 00000000fffffffd R10: 000000000153afa0 R11: 0000000000000293 R12: 00007fbb780008c0 R13: 00007fbb78000938 R14: 0000000000608b30 R15: 00007fbb780029c8 </TASK> Allocated by task 1050: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 do_blk_trace_setup+0xcb/0x410 __blk_trace_setup+0xac/0x130 blk_trace_ioctl+0xe9/0x1c0 blkdev_ioctl+0xf1/0x390 __x64_sys_ioctl+0xa5/0xe0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae Freed by task 1050: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_set_free_info+0x20/0x30 __kasan_slab_free+0x103/0x180 kfree+0x9a/0x4c0 __blk_trace_remove+0x53/0x70 blk_trace_ioctl+0x199/0x1c0 blkdev_common_ioctl+0x5e9/0xb30 blkdev_ioctl+0x1a5/0x390 __x64_sys_ioctl+0xa5/0xe0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff88816912f380 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 88 bytes inside of 96-byte region [ffff88816912f380, ffff88816912f3e0) The buggy address belongs to the page: page:000000009a1b4e7c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0f flags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff) raw: 0017ffffc0000200 ffffea00044f1100 dead000000000002 ffff88810004c780 raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88816912f280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff88816912f300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff88816912f380: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff88816912f400: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff88816912f480: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/30939293262eb433c960c4532a0d59c4073b2b84Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6418634238ade86f2b08192928787f39d8afb58cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78acc7dbd84a8c173a08584750845c31611160f2Patch
Impacted products
Vendor Product Version
Linux Linux Version: c0ea57608b691d6cde8aff23e11f9858a86b5918
Version: c0ea57608b691d6cde8aff23e11f9858a86b5918
Version: c0ea57608b691d6cde8aff23e11f9858a86b5918
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   Linux Linux Version: 5.12
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{
  "containers": {
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            "other": {
              "content": {
                "id": "CVE-2022-48913",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:33:53.963718Z",
                "version": "2.0.3"
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              "type": "ssvc"
            }
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        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:11.780Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/blktrace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "78acc7dbd84a8c173a08584750845c31611160f2",
              "status": "affected",
              "version": "c0ea57608b691d6cde8aff23e11f9858a86b5918",
              "versionType": "git"
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            {
              "lessThan": "6418634238ade86f2b08192928787f39d8afb58c",
              "status": "affected",
              "version": "c0ea57608b691d6cde8aff23e11f9858a86b5918",
              "versionType": "git"
            },
            {
              "lessThan": "30939293262eb433c960c4532a0d59c4073b2b84",
              "status": "affected",
              "version": "c0ea57608b691d6cde8aff23e11f9858a86b5918",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/blktrace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblktrace: fix use after free for struct blk_trace\n\nWhen tracing the whole disk, \u0027dropped\u0027 and \u0027msg\u0027 will be created\nunder \u0027q-\u003edebugfs_dir\u0027 and \u0027bt-\u003edir\u0027 is NULL, thus blk_trace_free()\nwon\u0027t remove those files. What\u0027s worse, the following UAF can be\ntriggered because of accessing stale \u0027dropped\u0027 and \u0027msg\u0027:\n\n==================================================================\nBUG: KASAN: use-after-free in blk_dropped_read+0x89/0x100\nRead of size 4 at addr ffff88816912f3d8 by task blktrace/1188\n\nCPU: 27 PID: 1188 Comm: blktrace Not tainted 5.17.0-rc4-next-20220217+ #469\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-4\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x34/0x44\n print_address_description.constprop.0.cold+0xab/0x381\n ? blk_dropped_read+0x89/0x100\n ? blk_dropped_read+0x89/0x100\n kasan_report.cold+0x83/0xdf\n ? blk_dropped_read+0x89/0x100\n kasan_check_range+0x140/0x1b0\n blk_dropped_read+0x89/0x100\n ? blk_create_buf_file_callback+0x20/0x20\n ? kmem_cache_free+0xa1/0x500\n ? do_sys_openat2+0x258/0x460\n full_proxy_read+0x8f/0xc0\n vfs_read+0xc6/0x260\n ksys_read+0xb9/0x150\n ? vfs_write+0x3d0/0x3d0\n ? fpregs_assert_state_consistent+0x55/0x60\n ? exit_to_user_mode_prepare+0x39/0x1e0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7fbc080d92fd\nCode: ce 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 1\nRSP: 002b:00007fbb95ff9cb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000000\nRAX: ffffffffffffffda RBX: 00007fbb95ff9dc0 RCX: 00007fbc080d92fd\nRDX: 0000000000000100 RSI: 00007fbb95ff9cc0 RDI: 0000000000000045\nRBP: 0000000000000045 R08: 0000000000406299 R09: 00000000fffffffd\nR10: 000000000153afa0 R11: 0000000000000293 R12: 00007fbb780008c0\nR13: 00007fbb78000938 R14: 0000000000608b30 R15: 00007fbb780029c8\n \u003c/TASK\u003e\n\nAllocated by task 1050:\n kasan_save_stack+0x1e/0x40\n __kasan_kmalloc+0x81/0xa0\n do_blk_trace_setup+0xcb/0x410\n __blk_trace_setup+0xac/0x130\n blk_trace_ioctl+0xe9/0x1c0\n blkdev_ioctl+0xf1/0x390\n __x64_sys_ioctl+0xa5/0xe0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFreed by task 1050:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_set_free_info+0x20/0x30\n __kasan_slab_free+0x103/0x180\n kfree+0x9a/0x4c0\n __blk_trace_remove+0x53/0x70\n blk_trace_ioctl+0x199/0x1c0\n blkdev_common_ioctl+0x5e9/0xb30\n blkdev_ioctl+0x1a5/0x390\n __x64_sys_ioctl+0xa5/0xe0\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe buggy address belongs to the object at ffff88816912f380\n which belongs to the cache kmalloc-96 of size 96\nThe buggy address is located 88 bytes inside of\n 96-byte region [ffff88816912f380, ffff88816912f3e0)\nThe buggy address belongs to the page:\npage:000000009a1b4e7c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0f\nflags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\nraw: 0017ffffc0000200 ffffea00044f1100 dead000000000002 ffff88810004c780\nraw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\npage dumped because: kasan: bad access detected\n\nMemory state around the buggy address:\n ffff88816912f280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n ffff88816912f300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n\u003effff88816912f380: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n                                                    ^\n ffff88816912f400: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n ffff88816912f480: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n=================================================================="
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T08:10:23.199Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/78acc7dbd84a8c173a08584750845c31611160f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/6418634238ade86f2b08192928787f39d8afb58c"
        },
        {
          "url": "https://git.kernel.org/stable/c/30939293262eb433c960c4532a0d59c4073b2b84"
        }
      ],
      "title": "blktrace: fix use after free for struct blk_trace",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48913",
    "datePublished": "2024-08-22T01:31:34.860Z",
    "dateReserved": "2024-08-21T06:06:23.294Z",
    "dateUpdated": "2024-12-19T08:10:23.199Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48913\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-22T02:15:05.613\",\"lastModified\":\"2024-08-27T16:12:58.620\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblktrace: fix use after free for struct blk_trace\\n\\nWhen tracing the whole disk, \u0027dropped\u0027 and \u0027msg\u0027 will be created\\nunder \u0027q-\u003edebugfs_dir\u0027 and \u0027bt-\u003edir\u0027 is NULL, thus blk_trace_free()\\nwon\u0027t remove those files. What\u0027s worse, the following UAF can be\\ntriggered because of accessing stale \u0027dropped\u0027 and \u0027msg\u0027:\\n\\n==================================================================\\nBUG: KASAN: use-after-free in blk_dropped_read+0x89/0x100\\nRead of size 4 at addr ffff88816912f3d8 by task blktrace/1188\\n\\nCPU: 27 PID: 1188 Comm: blktrace Not tainted 5.17.0-rc4-next-20220217+ #469\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-4\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x34/0x44\\n print_address_description.constprop.0.cold+0xab/0x381\\n ? blk_dropped_read+0x89/0x100\\n ? blk_dropped_read+0x89/0x100\\n kasan_report.cold+0x83/0xdf\\n ? blk_dropped_read+0x89/0x100\\n kasan_check_range+0x140/0x1b0\\n blk_dropped_read+0x89/0x100\\n ? blk_create_buf_file_callback+0x20/0x20\\n ? kmem_cache_free+0xa1/0x500\\n ? do_sys_openat2+0x258/0x460\\n full_proxy_read+0x8f/0xc0\\n vfs_read+0xc6/0x260\\n ksys_read+0xb9/0x150\\n ? vfs_write+0x3d0/0x3d0\\n ? fpregs_assert_state_consistent+0x55/0x60\\n ? exit_to_user_mode_prepare+0x39/0x1e0\\n do_syscall_64+0x35/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7fbc080d92fd\\nCode: ce 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 1\\nRSP: 002b:00007fbb95ff9cb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000000\\nRAX: ffffffffffffffda RBX: 00007fbb95ff9dc0 RCX: 00007fbc080d92fd\\nRDX: 0000000000000100 RSI: 00007fbb95ff9cc0 RDI: 0000000000000045\\nRBP: 0000000000000045 R08: 0000000000406299 R09: 00000000fffffffd\\nR10: 000000000153afa0 R11: 0000000000000293 R12: 00007fbb780008c0\\nR13: 00007fbb78000938 R14: 0000000000608b30 R15: 00007fbb780029c8\\n \u003c/TASK\u003e\\n\\nAllocated by task 1050:\\n kasan_save_stack+0x1e/0x40\\n __kasan_kmalloc+0x81/0xa0\\n do_blk_trace_setup+0xcb/0x410\\n __blk_trace_setup+0xac/0x130\\n blk_trace_ioctl+0xe9/0x1c0\\n blkdev_ioctl+0xf1/0x390\\n __x64_sys_ioctl+0xa5/0xe0\\n do_syscall_64+0x35/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nFreed by task 1050:\\n kasan_save_stack+0x1e/0x40\\n kasan_set_track+0x21/0x30\\n kasan_set_free_info+0x20/0x30\\n __kasan_slab_free+0x103/0x180\\n kfree+0x9a/0x4c0\\n __blk_trace_remove+0x53/0x70\\n blk_trace_ioctl+0x199/0x1c0\\n blkdev_common_ioctl+0x5e9/0xb30\\n blkdev_ioctl+0x1a5/0x390\\n __x64_sys_ioctl+0xa5/0xe0\\n do_syscall_64+0x35/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nThe buggy address belongs to the object at ffff88816912f380\\n which belongs to the cache kmalloc-96 of size 96\\nThe buggy address is located 88 bytes inside of\\n 96-byte region [ffff88816912f380, ffff88816912f3e0)\\nThe buggy address belongs to the page:\\npage:000000009a1b4e7c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0f\\nflags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\\nraw: 0017ffffc0000200 ffffea00044f1100 dead000000000002 ffff88810004c780\\nraw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff88816912f280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n ffff88816912f300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n\u003effff88816912f380: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n                                                    ^\\n ffff88816912f400: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n ffff88816912f480: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n==================================================================\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blktrace: corrige el use after free para struct blk_trace Al rastrear todo el disco, se crear\u00e1n \u0027dropped\u0027 y \u0027msg\u0027 en \u0027q-\u0026gt;debugfs_dir\u0027 y \u0027bt-\u0026gt;dir \u0027 es NULL, por lo tanto blk_trace_free() no eliminar\u00e1 esos archivos. Lo que es peor, el siguiente UAF se puede activar debido al acceso a \u0027soltado\u0027 y \u0027msg\u0027 obsoletos: ============================== ===================================== ERROR: KASAN: use after free en blk_dropped_read+0x89 /0x100 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff88816912f3d8 por tarea blktrace/1188 CPU: 27 PID: 1188 Comm: blktrace Not tainted 5.17.0-rc4-next-20220217+ #469 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996) , BIOS ?-20190727_073836-4 Seguimiento de llamadas:  dump_stack_lvl+0x34/0x44 print_address_description.constprop.0.cold+0xab/0x381 ? blk_dropped_read+0x89/0x100? blk_dropped_read+0x89/0x100 kasan_report.cold+0x83/0xdf ? blk_dropped_read+0x89/0x100 kasan_check_range+0x140/0x1b0 blk_dropped_read+0x89/0x100 ? blk_create_buf_file_callback+0x20/0x20? kmem_cache_free+0xa1/0x500 ? do_sys_openat2+0x258/0x460 full_proxy_read+0x8f/0xc0 vfs_read+0xc6/0x260 ksys_read+0xb9/0x150 ? vfs_write+0x3d0/0x3d0? fpregs_assert_state_consistent+0x55/0x60? exit_to_user_mode_prepare+0x39/0x1e0 do_syscall_64+0x35/0x80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fbc080d92fd C\u00f3digo: ce 20 00 00 75 10 b8 00 00 00 00 0f 5 48 3d 01 f0 ff ff 73 31 c3 48 83 1 RSP: 002b :00007fbb95ff9cb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fbb95ff9dc0 RCX: 00007fbc080d92fd RDX: 0000000000000100 R SI: 00007fbb95ff9cc0 RDI: 0000000000000045 RBP: 0000000000000045 R08: 0000000000406299 R09: 00000000fffffffd R10: 000000000153afa0 R11: 000000000293 R12: 00007fbb780008c0 R13: 00007fbb78000938 R14: 0000000000608b30 R15: 00007fbb780029c8  Asignado por tarea 1050: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 do_blk_trace_setup+0xcb/0x410 __blk_trace_setup+0xac/0x130 e9/0x1c0 blkdev_ioctl+0xf1/0x390 __x64_sys_ioctl+0xa5/0xe0 do_syscall_64+0x35 /0x80 Entry_SYSCALL_64_after_hwframe+0x44/0xae Liberado por la tarea 1050: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_set_free_info+0x20/0x30 __kasan_slab_free+0x103/0x180 kfree+0x9a/0x4c 0 __blk_trace_remove+0x53/0x70 blk_trace_ioctl+0x199/0x1c0 blkdev_common_ioctl+0x5e9 /0xb30 blkdev_ioctl+0x1a5/0x390 __x64_sys_ioctl+0xa5/0xe0 do_syscall_64+0x35/0x80 Entry_SYSCALL_64_after_hwframe+0x44/0xae La direcci\u00f3n con errores pertenece al objeto en ffff88816912f380 que pertenece al cach\u00e9 kmalloc- 96 de tama\u00f1o 96 La direcci\u00f3n del error se encuentra 88 bytes dentro de regi\u00f3n de 96 bytes [ffff88816912f380, ffff88816912f3e0) La direcci\u00f3n con errores pertenece a la p\u00e1gina: p\u00e1gina:000000009a1b4e7c refcount:1 mapcount:0 mapeo:00000000000000000 \u00edndice:0x0f banderas: 0x17ffffc0000200(slab|node= 0|zona=2|\u00faltimopupid=0x1fffff ) sin procesar: 0017ffffc0000200 ffffea00044f1100 muerto000000000002 ffff88810004c780 sin procesar: 0000000000000000 0000000000200020 00000001ffffffff 000000000000 0000 p\u00e1gina volcada porque: kasan: mal acceso detectado Estado de la memoria alrededor de la direcci\u00f3n con errores: ffff88816912f280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff88816912f300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc \u0026gt;ffff88816912f380: fa fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff88816912f400: fa fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff88816912f480: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc =============================== =======================================\"}],\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.15.27\",\"matchCriteriaId\":\"0124F44D-3165-4025-A6AD-1C47145E6B2A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.13\",\"matchCriteriaId\":\"B871B667-EDC0-435D-909E-E918D8D90995\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/30939293262eb433c960c4532a0d59c4073b2b84\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6418634238ade86f2b08192928787f39d8afb58c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/78acc7dbd84a8c173a08584750845c31611160f2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48913\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:33:53.963718Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:15.859Z\"}}], \"cna\": {\"title\": \"blktrace: fix use after free for struct blk_trace\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"c0ea57608b691d6cde8aff23e11f9858a86b5918\", \"lessThan\": \"78acc7dbd84a8c173a08584750845c31611160f2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0ea57608b691d6cde8aff23e11f9858a86b5918\", \"lessThan\": \"6418634238ade86f2b08192928787f39d8afb58c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c0ea57608b691d6cde8aff23e11f9858a86b5918\", \"lessThan\": \"30939293262eb433c960c4532a0d59c4073b2b84\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/trace/blktrace.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.27\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/trace/blktrace.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/78acc7dbd84a8c173a08584750845c31611160f2\"}, {\"url\": \"https://git.kernel.org/stable/c/6418634238ade86f2b08192928787f39d8afb58c\"}, {\"url\": \"https://git.kernel.org/stable/c/30939293262eb433c960c4532a0d59c4073b2b84\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblktrace: fix use after free for struct blk_trace\\n\\nWhen tracing the whole disk, \u0027dropped\u0027 and \u0027msg\u0027 will be created\\nunder \u0027q-\u003edebugfs_dir\u0027 and \u0027bt-\u003edir\u0027 is NULL, thus blk_trace_free()\\nwon\u0027t remove those files. What\u0027s worse, the following UAF can be\\ntriggered because of accessing stale \u0027dropped\u0027 and \u0027msg\u0027:\\n\\n==================================================================\\nBUG: KASAN: use-after-free in blk_dropped_read+0x89/0x100\\nRead of size 4 at addr ffff88816912f3d8 by task blktrace/1188\\n\\nCPU: 27 PID: 1188 Comm: blktrace Not tainted 5.17.0-rc4-next-20220217+ #469\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-4\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x34/0x44\\n print_address_description.constprop.0.cold+0xab/0x381\\n ? blk_dropped_read+0x89/0x100\\n ? blk_dropped_read+0x89/0x100\\n kasan_report.cold+0x83/0xdf\\n ? blk_dropped_read+0x89/0x100\\n kasan_check_range+0x140/0x1b0\\n blk_dropped_read+0x89/0x100\\n ? blk_create_buf_file_callback+0x20/0x20\\n ? kmem_cache_free+0xa1/0x500\\n ? do_sys_openat2+0x258/0x460\\n full_proxy_read+0x8f/0xc0\\n vfs_read+0xc6/0x260\\n ksys_read+0xb9/0x150\\n ? vfs_write+0x3d0/0x3d0\\n ? fpregs_assert_state_consistent+0x55/0x60\\n ? exit_to_user_mode_prepare+0x39/0x1e0\\n do_syscall_64+0x35/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\nRIP: 0033:0x7fbc080d92fd\\nCode: ce 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 1\\nRSP: 002b:00007fbb95ff9cb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000000\\nRAX: ffffffffffffffda RBX: 00007fbb95ff9dc0 RCX: 00007fbc080d92fd\\nRDX: 0000000000000100 RSI: 00007fbb95ff9cc0 RDI: 0000000000000045\\nRBP: 0000000000000045 R08: 0000000000406299 R09: 00000000fffffffd\\nR10: 000000000153afa0 R11: 0000000000000293 R12: 00007fbb780008c0\\nR13: 00007fbb78000938 R14: 0000000000608b30 R15: 00007fbb780029c8\\n \u003c/TASK\u003e\\n\\nAllocated by task 1050:\\n kasan_save_stack+0x1e/0x40\\n __kasan_kmalloc+0x81/0xa0\\n do_blk_trace_setup+0xcb/0x410\\n __blk_trace_setup+0xac/0x130\\n blk_trace_ioctl+0xe9/0x1c0\\n blkdev_ioctl+0xf1/0x390\\n __x64_sys_ioctl+0xa5/0xe0\\n do_syscall_64+0x35/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nFreed by task 1050:\\n kasan_save_stack+0x1e/0x40\\n kasan_set_track+0x21/0x30\\n kasan_set_free_info+0x20/0x30\\n __kasan_slab_free+0x103/0x180\\n kfree+0x9a/0x4c0\\n __blk_trace_remove+0x53/0x70\\n blk_trace_ioctl+0x199/0x1c0\\n blkdev_common_ioctl+0x5e9/0xb30\\n blkdev_ioctl+0x1a5/0x390\\n __x64_sys_ioctl+0xa5/0xe0\\n do_syscall_64+0x35/0x80\\n entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\nThe buggy address belongs to the object at ffff88816912f380\\n which belongs to the cache kmalloc-96 of size 96\\nThe buggy address is located 88 bytes inside of\\n 96-byte region [ffff88816912f380, ffff88816912f3e0)\\nThe buggy address belongs to the page:\\npage:000000009a1b4e7c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0f\\nflags: 0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)\\nraw: 0017ffffc0000200 ffffea00044f1100 dead000000000002 ffff88810004c780\\nraw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffff88816912f280: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n ffff88816912f300: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n\u003effff88816912f380: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n                                                    ^\\n ffff88816912f400: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n ffff88816912f480: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n==================================================================\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:10:23.199Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48913\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:10:23.199Z\", \"dateReserved\": \"2024-08-21T06:06:23.294Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-22T01:31:34.860Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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