nvd-json-data-feeds/CVE-2022/CVE-2022-489xx/CVE-2022-48923.json

{
  "id": "CVE-2022-48923",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-08-22T02:15:08.377",
  "lastModified": "2024-09-12T12:50:02.173",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: prevent copying too big compressed lzo segment\n\nCompressed length can be corrupted to be a lot larger than memory\nwe have allocated for buffer.\nThis will cause memcpy in copy_compressed_segment to write outside\nof allocated memory.\n\nThis mostly results in stuck read syscall but sometimes when using\nbtrfs send can get #GP\n\n  kernel: general protection fault, probably for non-canonical address 0x841551d5c1000: 0000 [#1] PREEMPT SMP NOPTI\n  kernel: CPU: 17 PID: 264 Comm: kworker/u256:7 Tainted: P           OE     5.17.0-rc2-1 #12\n  kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs]\n  kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs/btrfs/lzo.c:322 fs/btrfs/lzo.c:394) btrfs\n  Code starting with the faulting instruction\n  ===========================================\n     0:*  48 8b 06                mov    (%rsi),%rax              <-- trapping instruction\n     3:   48 8d 79 08             lea    0x8(%rcx),%rdi\n     7:   48 83 e7 f8             and    $0xfffffffffffffff8,%rdi\n     b:   48 89 01                mov    %rax,(%rcx)\n     e:   44 89 f0                mov    %r14d,%eax\n    11:   48 8b 54 06 f8          mov    -0x8(%rsi,%rax,1),%rdx\n  kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212\n  kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8\n  kernel: RDX: 0000000000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d\n  kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000\n  kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000\n  kernel: R13: 0000000000000008 R14: 0000000000001000 R15: 000841551d5c1000\n  kernel: FS:  0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:0000000000000000\n  kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0\n  kernel: Call Trace:\n  kernel:  <TASK>\n  kernel: end_compressed_bio_read (fs/btrfs/compression.c:104 fs/btrfs/compression.c:1363 fs/btrfs/compression.c:323) btrfs\n  kernel: end_workqueue_fn (fs/btrfs/disk-io.c:1923) btrfs\n  kernel: btrfs_work_helper (fs/btrfs/async-thread.c:326) btrfs\n  kernel: process_one_work (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312)\n  kernel: worker_thread (./include/linux/list.h:292 kernel/workqueue.c:2455)\n  kernel: ? process_one_work (kernel/workqueue.c:2397)\n  kernel: kthread (kernel/kthread.c:377)\n  kernel: ? kthread_complete_and_exit (kernel/kthread.c:332)\n  kernel: ret_from_fork (arch/x86/entry/entry_64.S:301)\n  kernel:  </TASK>"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: btrfs: evita copiar un segmento lzo comprimido demasiado grande. La longitud comprimida puede corromperse y ser mucho mayor que la memoria que hemos asignado para el b\u00fafer. Esto har\u00e1 que memcpy en copy_compressed_segment escriba fuera de la memoria asignada. Esto principalmente da como resultado una llamada al sistema de lectura bloqueada, pero a veces, cuando se usa el env\u00edo btrfs, se puede obtener el kernel #GP: falla de protecci\u00f3n general, probablemente para la direcci\u00f3n no can\u00f3nica 0x841551d5c1000: 0000 [#1] Kernel PREEMPT SMP NOPTI: CPU: 17 PID: 264 Comm: kworker /u256:7 Contaminado: P OE 5.17.0-rc2-1 #12 kernel: Workqueue: btrfs-endio btrfs_work_helper [btrfs] kernel: RIP: 0010:lzo_decompress_bio (./include/linux/fortify-string.h:225 fs /btrfs/lzo.c:322 fs/btrfs/lzo.c:394) C\u00f3digo btrfs que comienza con la instrucci\u00f3n err\u00f3nea ========================== ================== 0:* 48 8b 06 mov (%rsi),%rax &lt;-- instrucci\u00f3n de captura 3: 48 8d 79 08 lea 0x8(%rcx), %rdi 7: 48 83 e7 f8 y $0xffffffffffffffff8,%rdi b: 48 89 01 mov %rax,(%rcx) e: 44 89 f0 mov %r14d,%eax 11: 48 8b 54 06 f8 mov -0x8(% rsi,%rax,1),%rdx kernel: RSP: 0018:ffffb110812efd50 EFLAGS: 00010212 kernel: RAX: 0000000000001000 RBX: 000000009ca264c8 RCX: ffff98996e6d8ff8 kernel: RDX: 0000000064 RSI: 000841551d5c1000 RDI: ffffffff9500435d kernel: RBP: ffff989a3be856c0 R08: 0000000000000000 R09: 0000000000000000 kernel: R10: 0000000000000000 R11: 0000000000001000 R12: ffff98996e6d8000 kernel: R13: 0000000000000008 R14: 00000000000 01000 R15: 000841551d5c1000 kernel: FS: 0000000000000000(0000) GS:ffff98a09d640000(0000) knlGS:00000000000000000 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kernel: CR2: 00001e9f984d9ea8 CR3: 000000014971a000 CR4: 00000000003506e0 kernel: Seguimiento de llamadas: kernel:  kernel: end_compressed_bio_read (fs/btrfs/compression.c: 104 fs/btrfs/compression.c:1363 fs /btrfs/compression.c:323) kernel btrfs: end_workqueue_fn (fs/btrfs/disk-io.c:1923) kernel btrfs: btrfs_work_helper (fs/btrfs/async-thread.c:326) kernel btrfs: Process_one_work (./ arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:212 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2312) kernel: trabajador_thread (. /include/linux/list.h:292 kernel/workqueue.c:2455) kernel:? Process_one_work (kernel/workqueue.c:2397) kernel: kthread (kernel/kthread.c:377) kernel:? kthread_complete_and_exit (kernel/kthread.c:332) kernel: ret_from_fork (arch/x86/entry/entry_64.S:301) kernel: "
    }
  ],
  "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-787"
        }
      ]
    }
  ],
  "configurations": [
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          "negate": false,
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  "references": [
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      "url": "https://git.kernel.org/stable/c/741b23a970a79d5d3a1db2d64fa2c7b375a4febb",
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