fkie_cve-2023-52922
Vulnerability from fkie_nvd
Published
2024-11-28 15:15
Modified
2025-06-13 20:15
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcm_proc_show() BUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80 Read of size 8 at addr ffff888155846230 by task cat/7862 CPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xd5/0x150 print_report+0xc1/0x5e0 kasan_report+0xba/0xf0 bcm_proc_show+0x969/0xa80 seq_read_iter+0x4f6/0x1260 seq_read+0x165/0x210 proc_reg_read+0x227/0x300 vfs_read+0x1d5/0x8d0 ksys_read+0x11e/0x240 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Allocated by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x9e/0xa0 bcm_sendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 ____kasan_slab_free+0x161/0x1c0 slab_free_freelist_hook+0x119/0x220 __kmem_cache_free+0xb4/0x2e0 rcu_core+0x809/0x1bd0 bcm_op is freed before procfs entry be removed in bcm_release(), this lead to bcm_proc_show() may read the freed bcm_op.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11b8e27ed448baa385d90154a141466bd5e92f18Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c3941bb1eb53abe7d640ffee5c4d6b559829ab3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55c3b96074f3f9b0aee19bf93cd71af7516582bbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9533dbfac0ff7edd77a5fa2c24974b1d66c8b0a6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/995f47d76647708ec26c6e388663ad4f3f264787Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b58d36d0c1ea29a9571e0222a9c29df0ccfb7ffPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf254b4f68e480e73dab055014e002b77aed30edPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7Patch
af854a3a-2127-422b-91ae-364da2661108https://allelesecurity.com/use-after-free-vulnerability-in-can-bcm-subsystem-leading-to-information-disclosure-cve-2023-52922/
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 6.5
linux linux_kernel 6.5


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{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "115EB87B-910D-4A3D-B8DF-5F281A7E12A0",
              "versionEndExcluding": "4.14.322",
              "versionStartIncluding": "2.6.25",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D2D2CA9F-4CC4-4AF5-8C6D-E58415AB782E",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6E769E6A-7EEF-4FA8-BF41-6CA1CE537361",
              "versionEndExcluding": "6.1.42",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "60A1A1ED-EA6C-42F6-80D3-3316DC7608C7",
              "versionEndExcluding": "6.4.7",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*",
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            {
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              "matchCriteriaId": "E4A01A71-0F09-4DB2-A02F-7EFFBE27C98D",
              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: Fix UAF in bcm_proc_show()\n\nBUG: KASAN: slab-use-after-free in bcm_proc_show+0x969/0xa80\nRead of size 8 at addr ffff888155846230 by task cat/7862\n\nCPU: 1 PID: 7862 Comm: cat Not tainted 6.5.0-rc1-00153-gc8746099c197 #230\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0xd5/0x150\n print_report+0xc1/0x5e0\n kasan_report+0xba/0xf0\n bcm_proc_show+0x969/0xa80\n seq_read_iter+0x4f6/0x1260\n seq_read+0x165/0x210\n proc_reg_read+0x227/0x300\n vfs_read+0x1d5/0x8d0\n ksys_read+0x11e/0x240\n do_syscall_64+0x35/0xb0\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nAllocated by task 7846:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n __kasan_kmalloc+0x9e/0xa0\n bcm_sendmsg+0x264b/0x44e0\n sock_sendmsg+0xda/0x180\n ____sys_sendmsg+0x735/0x920\n ___sys_sendmsg+0x11d/0x1b0\n __sys_sendmsg+0xfa/0x1d0\n do_syscall_64+0x35/0xb0\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nFreed by task 7846:\n kasan_save_stack+0x1e/0x40\n kasan_set_track+0x21/0x30\n kasan_save_free_info+0x27/0x40\n ____kasan_slab_free+0x161/0x1c0\n slab_free_freelist_hook+0x119/0x220\n __kmem_cache_free+0xb4/0x2e0\n rcu_core+0x809/0x1bd0\n\nbcm_op is freed before procfs entry be removed in bcm_release(),\nthis lead to bcm_proc_show() may read the freed bcm_op."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: bcm: Fix UAF en bcm_proc_show() BUG: KASAN: slab-use-after-free en bcm_proc_show+0x969/0xa80 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff888155846230 por la tarea cat/7862 CPU: 1 PID: 7862 Comm: cat No contaminado 6.5.0-rc1-00153-gc8746099c197 #230 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Seguimiento de llamadas:  dump_stack_lvl+0xd5/0x150 print_report+0xc1/0x5e0 Asignado por la tarea 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x9e/0xa0 bcm_sendmsg+0x264b/0x44e0 sock_sendmsg+0xda/0x180 ____sys_sendmsg+0x735/0x920 ___sys_sendmsg+0x11d/0x1b0 __sys_sendmsg+0xfa/0x1d0 do_syscall_64+0x35/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Liberado por la tarea 7846: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x27/0x40 ____kasan_slab_free+0x161/0x1c0 slab_free_freelist_hook+0x119/0x220 __kmem_cache_free+0xb4/0x2e0 rcu_core+0x809/0x1bd0 bcm_op se libera antes de que se elimine la entrada procfs en bcm_release(), esto lleva a que bcm_proc_show() pueda leer el bcm_op liberado."
    }
  ],
  "id": "CVE-2023-52922",
  "lastModified": "2025-06-13T20:15:22.450",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-11-28T15:15:17.260",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/11b8e27ed448baa385d90154a141466bd5e92f18"
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    },
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "url": "https://git.kernel.org/stable/c/dfd0aa26e9a07f2ce546ccf8304ead6a2914e8a7"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://allelesecurity.com/use-after-free-vulnerability-in-can-bcm-subsystem-leading-to-information-disclosure-cve-2023-52922/"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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