fkie_nvd - fkie_cve-2022-49565

fkie_cve-2022-49565

Vulnerability from fkie_nvd

Published

2025-02-26 07:01

Modified

2025-02-26 07:01

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/lbr: Fix unchecked MSR access error on HSW The fuzzer triggers the below trace. [ 7763.384369] unchecked MSR access error: WRMSR to 0x689 (tried to write 0x1fffffff8101349e) at rIP: 0xffffffff810704a4 (native_write_msr+0x4/0x20) [ 7763.397420] Call Trace: [ 7763.399881] <TASK> [ 7763.401994] intel_pmu_lbr_restore+0x9a/0x1f0 [ 7763.406363] intel_pmu_lbr_sched_task+0x91/0x1c0 [ 7763.410992] __perf_event_task_sched_in+0x1cd/0x240 On a machine with the LBR format LBR_FORMAT_EIP_FLAGS2, when the TSX is disabled, a TSX quirk is required to access LBR from registers. The lbr_from_signext_quirk_needed() is introduced to determine whether the TSX quirk should be applied. However, the lbr_from_signext_quirk_needed() is invoked before the intel_pmu_lbr_init(), which parses the LBR format information. Without the correct LBR format information, the TSX quirk never be applied. Move the lbr_from_signext_quirk_needed() into the intel_pmu_lbr_init(). Checking x86_pmu.lbr_has_tsx in the lbr_from_signext_quirk_needed() is not required anymore. Both LBR_FORMAT_EIP_FLAGS2 and LBR_FORMAT_INFO have LBR_TSX flag, but only the LBR_FORMAT_EIP_FLAGS2 requirs the quirk. Update the comments accordingly.

References

▼	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/625bcd0685a1612225df83468c83412fc0edb3d7
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b0380e13502adf7dd8be4c47d622c3522aae6c63

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/intel/lbr: Fix unchecked MSR access error on HSW\n\nThe fuzzer triggers the below trace.\n\n[ 7763.384369] unchecked MSR access error: WRMSR to 0x689\n(tried to write 0x1fffffff8101349e) at rIP: 0xffffffff810704a4\n(native_write_msr+0x4/0x20)\n[ 7763.397420] Call Trace:\n[ 7763.399881]  \u003cTASK\u003e\n[ 7763.401994]  intel_pmu_lbr_restore+0x9a/0x1f0\n[ 7763.406363]  intel_pmu_lbr_sched_task+0x91/0x1c0\n[ 7763.410992]  __perf_event_task_sched_in+0x1cd/0x240\n\nOn a machine with the LBR format LBR_FORMAT_EIP_FLAGS2, when the TSX is\ndisabled, a TSX quirk is required to access LBR from registers.\nThe lbr_from_signext_quirk_needed() is introduced to determine whether\nthe TSX quirk should be applied. However, the\nlbr_from_signext_quirk_needed() is invoked before the\nintel_pmu_lbr_init(), which parses the LBR format information. Without\nthe correct LBR format information, the TSX quirk never be applied.\n\nMove the lbr_from_signext_quirk_needed() into the intel_pmu_lbr_init().\nChecking x86_pmu.lbr_has_tsx in the lbr_from_signext_quirk_needed() is\nnot required anymore.\n\nBoth LBR_FORMAT_EIP_FLAGS2 and LBR_FORMAT_INFO have LBR_TSX flag, but\nonly the LBR_FORMAT_EIP_FLAGS2 requirs the quirk. Update the comments\naccordingly."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf/x86/intel/lbr: Se corrige el error de acceso a MSR sin verificar en HSW. El fuzzer activa el siguiente seguimiento. [ 7763.384369] Error de acceso a MSR sin marcar: WRMSR a 0x689 (intent\u00f3 escribir 0x1fffffff8101349e) en rIP: 0xffffffff810704a4 (native_write_msr+0x4/0x20) [ 7763.397420] Seguimiento de llamadas: [ 7763.399881]  [ 7763.401994] intel_pmu_lbr_restore+0x9a/0x1f0 [ 7763.406363] intel_pmu_lbr_sched_task+0x91/0x1c0 [ 7763.410992] __perf_event_task_sched_in+0x1cd/0x240 Activado una m\u00e1quina con el formato LBR LBR_FORMAT_EIP_FLAGS2, cuando el TSX est\u00e1 deshabilitado, se requiere una peculiaridad TSX para acceder al LBR desde los registros. Se introduce lbr_from_signext_quirk_needed() para determinar si se debe aplicar la peculiaridad TSX. Sin embargo, lbr_from_signext_quirk_needed() se invoca antes de intel_pmu_lbr_init(), que analiza la informaci\u00f3n del formato LBR. Sin la informaci\u00f3n correcta del formato LBR, la peculiaridad TSX nunca se aplicar\u00e1. Mueva lbr_from_signext_quirk_needed() a intel_pmu_lbr_init(). Ya no es necesario comprobar x86_pmu.lbr_has_tsx en lbr_from_signext_quirk_needed(). Tanto LBR_FORMAT_EIP_FLAGS2 como LBR_FORMAT_INFO tienen el indicador LBR_TSX, pero solo LBR_FORMAT_EIP_FLAGS2 requiere esta caracter\u00edstica. Actualice los comentarios en consecuencia."
    }
  ],
  "id": "CVE-2022-49565",
  "lastModified": "2025-02-26T07:01:32.240",
  "metrics": {},
  "published": "2025-02-26T07:01:32.240",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/625bcd0685a1612225df83468c83412fc0edb3d7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b0380e13502adf7dd8be4c47d622c3522aae6c63"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2022-49565 (GCVE-0-2022-49565)

Vulnerability from cvelistv5

Published

2025-02-26 02:23

Modified

2025-05-04 08:40

Severity ?

Summary

References

▼	URL	Tags
	https://git.kernel.org/stable/c/625bcd0685a1612225df83468c83412fc0edb3d7
	https://git.kernel.org/stable/c/b0380e13502adf7dd8be4c47d622c3522aae6c63

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1ac7fd8159a842b3aa51f0b46a351fa3eeb8fbf3
Version: 1ac7fd8159a842b3aa51f0b46a351fa3eeb8fbf3

Linux

Version: 5.17

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/events/intel/lbr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "625bcd0685a1612225df83468c83412fc0edb3d7",
              "status": "affected",
              "version": "1ac7fd8159a842b3aa51f0b46a351fa3eeb8fbf3",
              "versionType": "git"
            },
            {
              "lessThan": "b0380e13502adf7dd8be4c47d622c3522aae6c63",
              "status": "affected",
              "version": "1ac7fd8159a842b3aa51f0b46a351fa3eeb8fbf3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/events/intel/lbr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.15",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/intel/lbr: Fix unchecked MSR access error on HSW\n\nThe fuzzer triggers the below trace.\n\n[ 7763.384369] unchecked MSR access error: WRMSR to 0x689\n(tried to write 0x1fffffff8101349e) at rIP: 0xffffffff810704a4\n(native_write_msr+0x4/0x20)\n[ 7763.397420] Call Trace:\n[ 7763.399881]  \u003cTASK\u003e\n[ 7763.401994]  intel_pmu_lbr_restore+0x9a/0x1f0\n[ 7763.406363]  intel_pmu_lbr_sched_task+0x91/0x1c0\n[ 7763.410992]  __perf_event_task_sched_in+0x1cd/0x240\n\nOn a machine with the LBR format LBR_FORMAT_EIP_FLAGS2, when the TSX is\ndisabled, a TSX quirk is required to access LBR from registers.\nThe lbr_from_signext_quirk_needed() is introduced to determine whether\nthe TSX quirk should be applied. However, the\nlbr_from_signext_quirk_needed() is invoked before the\nintel_pmu_lbr_init(), which parses the LBR format information. Without\nthe correct LBR format information, the TSX quirk never be applied.\n\nMove the lbr_from_signext_quirk_needed() into the intel_pmu_lbr_init().\nChecking x86_pmu.lbr_has_tsx in the lbr_from_signext_quirk_needed() is\nnot required anymore.\n\nBoth LBR_FORMAT_EIP_FLAGS2 and LBR_FORMAT_INFO have LBR_TSX flag, but\nonly the LBR_FORMAT_EIP_FLAGS2 requirs the quirk. Update the comments\naccordingly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:40:45.536Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/625bcd0685a1612225df83468c83412fc0edb3d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0380e13502adf7dd8be4c47d622c3522aae6c63"
        }
      ],
      "title": "perf/x86/intel/lbr: Fix unchecked MSR access error on HSW",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49565",
    "datePublished": "2025-02-26T02:23:11.213Z",
    "dateReserved": "2025-02-26T02:21:30.410Z",
    "dateUpdated": "2025-05-04T08:40:45.536Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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