CVE-2022-49513

{
  "id": "CVE-2022-49513",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "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": "c4435630361d9bebf7154a0c842dc1fb7ae39c99",
              "lessThan": "a1964688582d26af1328e19b658933659fb54337",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c4435630361d9bebf7154a0c842dc1fb7ae39c99",
              "lessThan": "1e32083f327184b6226ce320ef30085ce785ea4e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c4435630361d9bebf7154a0c842dc1fb7ae39c99",
              "lessThan": "a85ee6401a47ae3fc64ba506cacb3e7873823c65",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/cpufreq/cpufreq_governor.c",
            "drivers/cpufreq/cpufreq_governor.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.91",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/cpufreq/cpufreq_governor.c",
            "drivers/cpufreq/cpufreq_governor.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-26T07:01:27.380",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1e32083f327184b6226ce320ef30085ce785ea4e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a1964688582d26af1328e19b658933659fb54337",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a85ee6401a47ae3fc64ba506cacb3e7873823c65",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: governor: Use kobject release() method to free dbs_data\n\nThe struct dbs_data embeds a struct gov_attr_set and\nthe struct gov_attr_set embeds a kobject. Since every kobject must have\na release() method and we can't use kfree() to free it directly,\nso introduce cpufreq_dbs_data_release() to release the dbs_data via\nthe kobject::release() method. This fixes the calltrace like below:\n\n  ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x34\n  WARNING: CPU: 12 PID: 810 at lib/debugobjects.c:505 debug_print_object+0xb8/0x100\n  Modules linked in:\n  CPU: 12 PID: 810 Comm: sh Not tainted 5.16.0-next-20220120-yocto-standard+ #536\n  Hardware name: Marvell OcteonTX CN96XX board (DT)\n  pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  pc : debug_print_object+0xb8/0x100\n  lr : debug_print_object+0xb8/0x100\n  sp : ffff80001dfcf9a0\n  x29: ffff80001dfcf9a0 x28: 0000000000000001 x27: ffff0001464f0000\n  x26: 0000000000000000 x25: ffff8000090e3f00 x24: ffff80000af60210\n  x23: ffff8000094dfb78 x22: ffff8000090e3f00 x21: ffff0001080b7118\n  x20: ffff80000aeb2430 x19: ffff800009e8f5e0 x18: 0000000000000000\n  x17: 0000000000000002 x16: 00004d62e58be040 x15: 013590470523aff8\n  x14: ffff8000090e1828 x13: 0000000001359047 x12: 00000000f5257d14\n  x11: 0000000000040591 x10: 0000000066c1ffea x9 : ffff8000080d15e0\n  x8 : ffff80000a1765a8 x7 : 0000000000000000 x6 : 0000000000000001\n  x5 : ffff800009e8c000 x4 : ffff800009e8c760 x3 : 0000000000000000\n  x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0001474ed040\n  Call trace:\n   debug_print_object+0xb8/0x100\n   __debug_check_no_obj_freed+0x1d0/0x25c\n   debug_check_no_obj_freed+0x24/0xa0\n   kfree+0x11c/0x440\n   cpufreq_dbs_governor_exit+0xa8/0xac\n   cpufreq_exit_governor+0x44/0x90\n   cpufreq_set_policy+0x29c/0x570\n   store_scaling_governor+0x110/0x154\n   store+0xb0/0xe0\n   sysfs_kf_write+0x58/0x84\n   kernfs_fop_write_iter+0x12c/0x1c0\n   new_sync_write+0xf0/0x18c\n   vfs_write+0x1cc/0x220\n   ksys_write+0x74/0x100\n   __arm64_sys_write+0x28/0x3c\n   invoke_syscall.constprop.0+0x58/0xf0\n   do_el0_svc+0x70/0x170\n   el0_svc+0x54/0x190\n   el0t_64_sync_handler+0xa4/0x130\n   el0t_64_sync+0x1a0/0x1a4\n  irq event stamp: 189006\n  hardirqs last  enabled at (189005): [<ffff8000080849d0>] finish_task_switch.isra.0+0xe0/0x2c0\n  hardirqs last disabled at (189006): [<ffff8000090667a4>] el1_dbg+0x24/0xa0\n  softirqs last  enabled at (188966): [<ffff8000080106d0>] __do_softirq+0x4b0/0x6a0\n  softirqs last disabled at (188957): [<ffff80000804a618>] __irq_exit_rcu+0x108/0x1a4\n\n[ rjw: Because can be freed by the gov_attr_set_put() in\n  cpufreq_dbs_governor_exit() now, it is also necessary to put the\n  invocation of the governor ->exit() callback into the new\n  cpufreq_dbs_data_release() function. ]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cpufreq: governor: Use el método kobject release() para liberar dbs_data La estructura dbs_data incorpora una estructura gov_attr_set y la estructura gov_attr_set incorpora un kobject. Dado que cada kobject debe tener un método release() y no podemos usar kfree() para liberarlo directamente, introduzca cpufreq_dbs_data_release() para liberar dbs_data a través del método kobject::release(). Esto corrige el seguimiento de llamadas como se muestra a continuación: ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x34 WARNING: CPU: 12 PID: 810 at lib/debugobjects.c:505 debug_print_object+0xb8/0x100 Modules linked in: CPU: 12 PID: 810 Comm: sh Not tainted 5.16.0-next-20220120-yocto-standard+ #536 Hardware name: Marvell OcteonTX CN96XX board (DT) pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object+0xb8/0x100 lr : debug_print_object+0xb8/0x100 sp : ffff80001dfcf9a0 x29: ffff80001dfcf9a0 x28: 0000000000000001 x27: ffff0001464f0000 x26: 0000000000000000 x25: ffff8000090e3f00 x24: ffff80000af60210 x23: ffff8000094dfb78 x22: ffff8000090e3f00 x21: ffff0001080b7118 x20: ffff80000aeb2430 x19: ffff800009e8f5e0 x18: 0000000000000000 x17: 0000000000000002 x16: 00004d62e58be040 x15: 013590470523aff8 x14: ffff8000090e1828 x13: 0000000001359047 x12: 00000000f5257d14 x11: 0000000000040591 x10: 0000000066c1ffea x9 : ffff8000080d15e0 x8 : ffff80000a1765a8 x7 : 0000000000000000 x6 : 0000000000000001 x5 : ffff800009e8c000 x4 : ffff800009e8c760 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0001474ed040 Call trace: debug_print_object+0xb8/0x100 __debug_check_no_obj_freed+0x1d0/0x25c debug_check_no_obj_freed+0x24/0xa0 kfree+0x11c/0x440 cpufreq_dbs_governor_exit+0xa8/0xac cpufreq_exit_governor+0x44/0x90 cpufreq_set_policy+0x29c/0x570 store_scaling_governor+0x110/0x154 store+0xb0/0xe0 sysfs_kf_write+0x58/0x84 kernfs_fop_write_iter+0x12c/0x1c0 new_sync_write+0xf0/0x18c vfs_write+0x1cc/0x220 ksys_write+0x74/0x100 __arm64_sys_write+0x28/0x3c invoke_syscall.constprop.0+0x58/0xf0 do_el0_svc+0x70/0x170 el0_svc+0x54/0x190 el0t_64_sync_handler+0xa4/0x130 el0t_64_sync+0x1a0/0x1a4 irq event stamp: 189006 hardirqs last enabled at (189005): [] finish_task_switch.isra.0+0xe0/0x2c0 hardirqs last disabled at (189006): [] el1_dbg+0x24/0xa0 softirqs last enabled at (188966): [] __do_softirq+0x4b0/0x6a0 softirqs last disabled at (188957): [] __irq_exit_rcu+0x108/0x1a4 [ rjw: Because can be freed by the gov_attr_set_put() in cpufreq_dbs_governor_exit() now, it is also necessary to put the invocation of the governor -&gt;exit() callback into the new cpufreq_dbs_data_release() function. ] "
    }
  ],
  "lastModified": "2026-06-17T05:18:17.480",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E971D8DD-B809-44DF-A31F-1A124020CE28",
              "versionEndExcluding": "5.15.91",
              "versionStartIncluding": "4.6"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "98CD047E-3CA9-4A90-93B0-040784FAD016",
              "versionEndExcluding": "5.18.3",
              "versionStartIncluding": "5.16"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}