CVE-2022-49784 (GCVE-0-2022-49784)
Vulnerability from cvelistv5
Published
2025-05-01 14:09
Modified
2025-05-04 08:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd/uncore: Fix memory leak for events array When a CPU comes online, the per-CPU NB and LLC uncore contexts are freed but not the events array within the context structure. This causes a memory leak as identified by the kmemleak detector. [...] unreferenced object 0xffff8c5944b8e320 (size 32): comm "swapper/0", pid 1, jiffies 4294670387 (age 151.072s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000000759fb79>] amd_uncore_cpu_up_prepare+0xaf/0x230 [<00000000ddc9e126>] cpuhp_invoke_callback+0x2cf/0x470 [<0000000093e727d4>] cpuhp_issue_call+0x14d/0x170 [<0000000045464d54>] __cpuhp_setup_state_cpuslocked+0x11e/0x330 [<0000000069f67cbd>] __cpuhp_setup_state+0x6b/0x110 [<0000000015365e0f>] amd_uncore_init+0x260/0x321 [<00000000089152d2>] do_one_initcall+0x3f/0x1f0 [<000000002d0bd18d>] kernel_init_freeable+0x1ca/0x212 [<0000000030be8dde>] kernel_init+0x11/0x120 [<0000000059709e59>] ret_from_fork+0x22/0x30 unreferenced object 0xffff8c5944b8dd40 (size 64): comm "swapper/0", pid 1, jiffies 4294670387 (age 151.072s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000306efe8b>] amd_uncore_cpu_up_prepare+0x183/0x230 [<00000000ddc9e126>] cpuhp_invoke_callback+0x2cf/0x470 [<0000000093e727d4>] cpuhp_issue_call+0x14d/0x170 [<0000000045464d54>] __cpuhp_setup_state_cpuslocked+0x11e/0x330 [<0000000069f67cbd>] __cpuhp_setup_state+0x6b/0x110 [<0000000015365e0f>] amd_uncore_init+0x260/0x321 [<00000000089152d2>] do_one_initcall+0x3f/0x1f0 [<000000002d0bd18d>] kernel_init_freeable+0x1ca/0x212 [<0000000030be8dde>] kernel_init+0x11/0x120 [<0000000059709e59>] ret_from_fork+0x22/0x30 [...] Fix the problem by freeing the events array before freeing the uncore context.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bdfe34597139cfcecd47a2eb97fea44d77157491
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f75be9885d49e3717de962345c4572ddab52b178
Impacted products
Vendor Product Version
Linux Linux Version: 39621c5808f5dda75d03dc4b2d4d2b13a5a1c34b
Version: 39621c5808f5dda75d03dc4b2d4d2b13a5a1c34b
 Create a notification for this product.
   Linux Linux Version: 6.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/events/amd/uncore.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f75be9885d49e3717de962345c4572ddab52b178",
              "status": "affected",
              "version": "39621c5808f5dda75d03dc4b2d4d2b13a5a1c34b",
              "versionType": "git"
            },
            {
              "lessThan": "bdfe34597139cfcecd47a2eb97fea44d77157491",
              "status": "affected",
              "version": "39621c5808f5dda75d03dc4b2d4d2b13a5a1c34b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/events/amd/uncore.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.10",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/amd/uncore: Fix memory leak for events array\n\nWhen a CPU comes online, the per-CPU NB and LLC uncore contexts are\nfreed but not the events array within the context structure. This\ncauses a memory leak as identified by the kmemleak detector.\n\n  [...]\n  unreferenced object 0xffff8c5944b8e320 (size 32):\n    comm \"swapper/0\", pid 1, jiffies 4294670387 (age 151.072s)\n    hex dump (first 32 bytes):\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [\u003c000000000759fb79\u003e] amd_uncore_cpu_up_prepare+0xaf/0x230\n      [\u003c00000000ddc9e126\u003e] cpuhp_invoke_callback+0x2cf/0x470\n      [\u003c0000000093e727d4\u003e] cpuhp_issue_call+0x14d/0x170\n      [\u003c0000000045464d54\u003e] __cpuhp_setup_state_cpuslocked+0x11e/0x330\n      [\u003c0000000069f67cbd\u003e] __cpuhp_setup_state+0x6b/0x110\n      [\u003c0000000015365e0f\u003e] amd_uncore_init+0x260/0x321\n      [\u003c00000000089152d2\u003e] do_one_initcall+0x3f/0x1f0\n      [\u003c000000002d0bd18d\u003e] kernel_init_freeable+0x1ca/0x212\n      [\u003c0000000030be8dde\u003e] kernel_init+0x11/0x120\n      [\u003c0000000059709e59\u003e] ret_from_fork+0x22/0x30\n  unreferenced object 0xffff8c5944b8dd40 (size 64):\n    comm \"swapper/0\", pid 1, jiffies 4294670387 (age 151.072s)\n    hex dump (first 32 bytes):\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    backtrace:\n      [\u003c00000000306efe8b\u003e] amd_uncore_cpu_up_prepare+0x183/0x230\n      [\u003c00000000ddc9e126\u003e] cpuhp_invoke_callback+0x2cf/0x470\n      [\u003c0000000093e727d4\u003e] cpuhp_issue_call+0x14d/0x170\n      [\u003c0000000045464d54\u003e] __cpuhp_setup_state_cpuslocked+0x11e/0x330\n      [\u003c0000000069f67cbd\u003e] __cpuhp_setup_state+0x6b/0x110\n      [\u003c0000000015365e0f\u003e] amd_uncore_init+0x260/0x321\n      [\u003c00000000089152d2\u003e] do_one_initcall+0x3f/0x1f0\n      [\u003c000000002d0bd18d\u003e] kernel_init_freeable+0x1ca/0x212\n      [\u003c0000000030be8dde\u003e] kernel_init+0x11/0x120\n      [\u003c0000000059709e59\u003e] ret_from_fork+0x22/0x30\n  [...]\n\nFix the problem by freeing the events array before freeing the uncore\ncontext."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:45:17.907Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f75be9885d49e3717de962345c4572ddab52b178"
        },
        {
          "url": "https://git.kernel.org/stable/c/bdfe34597139cfcecd47a2eb97fea44d77157491"
        }
      ],
      "title": "perf/x86/amd/uncore: Fix memory leak for events array",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49784",
    "datePublished": "2025-05-01T14:09:17.695Z",
    "dateReserved": "2025-05-01T14:05:17.223Z",
    "dateUpdated": "2025-05-04T08:45:17.907Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49784\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:01.610\",\"lastModified\":\"2025-05-02T13:53:20.943\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nperf/x86/amd/uncore: Fix memory leak for events array\\n\\nWhen a CPU comes online, the per-CPU NB and LLC uncore contexts are\\nfreed but not the events array within the context structure. This\\ncauses a memory leak as identified by the kmemleak detector.\\n\\n  [...]\\n  unreferenced object 0xffff8c5944b8e320 (size 32):\\n    comm \\\"swapper/0\\\", pid 1, jiffies 4294670387 (age 151.072s)\\n    hex dump (first 32 bytes):\\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n    backtrace:\\n      [\u003c000000000759fb79\u003e] amd_uncore_cpu_up_prepare+0xaf/0x230\\n      [\u003c00000000ddc9e126\u003e] cpuhp_invoke_callback+0x2cf/0x470\\n      [\u003c0000000093e727d4\u003e] cpuhp_issue_call+0x14d/0x170\\n      [\u003c0000000045464d54\u003e] __cpuhp_setup_state_cpuslocked+0x11e/0x330\\n      [\u003c0000000069f67cbd\u003e] __cpuhp_setup_state+0x6b/0x110\\n      [\u003c0000000015365e0f\u003e] amd_uncore_init+0x260/0x321\\n      [\u003c00000000089152d2\u003e] do_one_initcall+0x3f/0x1f0\\n      [\u003c000000002d0bd18d\u003e] kernel_init_freeable+0x1ca/0x212\\n      [\u003c0000000030be8dde\u003e] kernel_init+0x11/0x120\\n      [\u003c0000000059709e59\u003e] ret_from_fork+0x22/0x30\\n  unreferenced object 0xffff8c5944b8dd40 (size 64):\\n    comm \\\"swapper/0\\\", pid 1, jiffies 4294670387 (age 151.072s)\\n    hex dump (first 32 bytes):\\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\\n    backtrace:\\n      [\u003c00000000306efe8b\u003e] amd_uncore_cpu_up_prepare+0x183/0x230\\n      [\u003c00000000ddc9e126\u003e] cpuhp_invoke_callback+0x2cf/0x470\\n      [\u003c0000000093e727d4\u003e] cpuhp_issue_call+0x14d/0x170\\n      [\u003c0000000045464d54\u003e] __cpuhp_setup_state_cpuslocked+0x11e/0x330\\n      [\u003c0000000069f67cbd\u003e] __cpuhp_setup_state+0x6b/0x110\\n      [\u003c0000000015365e0f\u003e] amd_uncore_init+0x260/0x321\\n      [\u003c00000000089152d2\u003e] do_one_initcall+0x3f/0x1f0\\n      [\u003c000000002d0bd18d\u003e] kernel_init_freeable+0x1ca/0x212\\n      [\u003c0000000030be8dde\u003e] kernel_init+0x11/0x120\\n      [\u003c0000000059709e59\u003e] ret_from_fork+0x22/0x30\\n  [...]\\n\\nFix the problem by freeing the events array before freeing the uncore\\ncontext.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/x86/amd/uncore: Se corrige una fuga de memoria en la matriz de eventos. Cuando una CPU se conecta, se liberan los contextos de n\u00facleo \u00fanico (NB) y LLC por CPU, pero no la matriz de eventos dentro de la estructura del contexto. Esto provoca una fuga de memoria, identificada por el detector kmemleak. [...] objeto sin referencia 0xffff8c5944b8e320 (tama\u00f1o 32): comm \\\"swapper/0\\\", pid 1, jiffies 4294670387 (edad 151.072s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [\u0026lt;000000000759fb79\u0026gt;] amd_uncore_cpu_up_prepare+0xaf/0x230 [\u0026lt;00000000ddc9e126\u0026gt;] cpuhp_invoke_callback+0x2cf/0x470 [\u0026lt;0000000093e727d4\u0026gt;] cpuhp_issue_call+0x14d/0x170 [\u0026lt;0000000045464d54\u0026gt;] __cpuhp_setup_state_cpuslocked+0x11e/0x330 [\u0026lt;0000000069f67cbd\u0026gt;] __cpuhp_setup_state+0x6b/0x110 [\u0026lt;0000000015365e0f\u0026gt;] amd_uncore_init+0x260/0x321 [\u0026lt;00000000089152d2\u0026gt;] do_one_initcall+0x3f/0x1f0 [\u0026lt;000000002d0bd18d\u0026gt;] kernel_init_freeable+0x1ca/0x212 [\u0026lt;0000000030be8dde\u0026gt;] kernel_init+0x11/0x120 [\u0026lt;0000000059709e59\u0026gt;] ret_from_fork+0x22/0x30 objeto sin referencia 0xffff8c5944b8dd40 (tama\u00f1o 64): comm \\\"swapper/0\\\", pid 1, jiffies 4294670387 (edad 151.072s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ seguimiento inverso: [\u0026lt;00000000306efe8b\u0026gt;] preparaci\u00f3n de CPU activada de AMD sin n\u00facleo + 0x183/0x230 [\u0026lt;00000000ddc9e126\u0026gt;] devoluci\u00f3n de llamada de invocaci\u00f3n de CPUHp + 0x2cf/0x470 [\u0026lt;0000000093e727d4\u0026gt;] llamada de emisi\u00f3n de CPUHp + 0x14d/0x170 [\u0026lt;0000000045464d54\u0026gt;] estado de configuraci\u00f3n de CPUHp bloqueado + 0x11e/0x330 [\u0026lt;0000000069f67cbd\u0026gt;] __cpuhp_setup_state+0x6b/0x110 [\u0026lt;0000000015365e0f\u0026gt;] amd_uncore_init+0x260/0x321 [\u0026lt;00000000089152d2\u0026gt;] do_one_initcall+0x3f/0x1f0 [\u0026lt;000000002d0bd18d\u0026gt;] kernel_init_freeable+0x1ca/0x212 [\u0026lt;0000000030be8dde\u0026gt;] kernel_init+0x11/0x120 [\u0026lt;0000000059709e59\u0026gt;] ret_from_fork+0x22/0x30 [...] Solucione el problema liberando la matriz de eventos antes de liberar el contexto uncore.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/bdfe34597139cfcecd47a2eb97fea44d77157491\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f75be9885d49e3717de962345c4572ddab52b178\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.