GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2022-50239 (GCVE-0-2022-50239)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:01 – Updated: 2026-05-11 19:15
VLAI
Title
cpufreq: qcom: fix writes in read-only memory region
Summary
In the Linux kernel, the following vulnerability has been resolved: cpufreq: qcom: fix writes in read-only memory region This commit fixes a kernel oops because of a write in some read-only memory: [ 9.068287] Unable to handle kernel write to read-only memory at virtual address ffff800009240ad8 ..snip.. [ 9.138790] Internal error: Oops: 9600004f [#1] PREEMPT SMP ..snip.. [ 9.269161] Call trace: [ 9.276271] __memcpy+0x5c/0x230 [ 9.278531] snprintf+0x58/0x80 [ 9.282002] qcom_cpufreq_msm8939_name_version+0xb4/0x190 [ 9.284869] qcom_cpufreq_probe+0xc8/0x39c ..snip.. The following line defines a pointer that point to a char buffer stored in read-only memory: char *pvs_name = "speedXX-pvsXX-vXX"; This pointer is meant to hold a template "speedXX-pvsXX-vXX" where the XX values get overridden by the qcom_cpufreq_krait_name_version function. Since the template is actually stored in read-only memory, when the function executes the following call we get an oops: snprintf(*pvs_name, sizeof("speedXX-pvsXX-vXX"), "speed%d-pvs%d-v%d", speed, pvs, pvs_ver); To fix this issue, we instead store the template name onto the stack by using the following syntax: char pvs_name_buffer[] = "speedXX-pvsXX-vXX"; Because the `pvs_name` needs to be able to be assigned to NULL, the template buffer is stored in the pvs_name_buffer and not under the pvs_name variable.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a8811ec764f95a04ba82f6f457e28c5e9e36e36b , < 794ded0bc461287a268bed21fea2eebb6e5d232c (git)
Affected: a8811ec764f95a04ba82f6f457e28c5e9e36e36b , < 14d260f94ff89543597ffea13db8b277a810e08e (git)
Affected: a8811ec764f95a04ba82f6f457e28c5e9e36e36b , < b74ee4e301ca01e431e240c046173332966e2431 (git)
Affected: a8811ec764f95a04ba82f6f457e28c5e9e36e36b , < 01039fb8e90c9cb684430414bff70cea9eb168c5 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.152 , ≤ 5.10.* (semver)
Unaffected: 5.15.76 , ≤ 5.15.* (semver)
Unaffected: 6.0.6 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cpufreq/qcom-cpufreq-nvmem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "794ded0bc461287a268bed21fea2eebb6e5d232c",
              "status": "affected",
              "version": "a8811ec764f95a04ba82f6f457e28c5e9e36e36b",
              "versionType": "git"
            },
            {
              "lessThan": "14d260f94ff89543597ffea13db8b277a810e08e",
              "status": "affected",
              "version": "a8811ec764f95a04ba82f6f457e28c5e9e36e36b",
              "versionType": "git"
            },
            {
              "lessThan": "b74ee4e301ca01e431e240c046173332966e2431",
              "status": "affected",
              "version": "a8811ec764f95a04ba82f6f457e28c5e9e36e36b",
              "versionType": "git"
            },
            {
              "lessThan": "01039fb8e90c9cb684430414bff70cea9eb168c5",
              "status": "affected",
              "version": "a8811ec764f95a04ba82f6f457e28c5e9e36e36b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cpufreq/qcom-cpufreq-nvmem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.152",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.76",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.6",
              "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": "5.10.152",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.76",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.6",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: qcom: fix writes in read-only memory region\n\nThis commit fixes a kernel oops because of a write in some read-only memory:\n\n\t[    9.068287] Unable to handle kernel write to read-only memory at virtual address ffff800009240ad8\n\t..snip..\n\t[    9.138790] Internal error: Oops: 9600004f [#1] PREEMPT SMP\n\t..snip..\n\t[    9.269161] Call trace:\n\t[    9.276271]  __memcpy+0x5c/0x230\n\t[    9.278531]  snprintf+0x58/0x80\n\t[    9.282002]  qcom_cpufreq_msm8939_name_version+0xb4/0x190\n\t[    9.284869]  qcom_cpufreq_probe+0xc8/0x39c\n\t..snip..\n\nThe following line defines a pointer that point to a char buffer stored\nin read-only memory:\n\n\tchar *pvs_name = \"speedXX-pvsXX-vXX\";\n\nThis pointer is meant to hold a template \"speedXX-pvsXX-vXX\" where the\nXX values get overridden by the qcom_cpufreq_krait_name_version function. Since\nthe template is actually stored in read-only memory, when the function\nexecutes the following call we get an oops:\n\n\tsnprintf(*pvs_name, sizeof(\"speedXX-pvsXX-vXX\"), \"speed%d-pvs%d-v%d\",\n\t\t speed, pvs, pvs_ver);\n\nTo fix this issue, we instead store the template name onto the stack by\nusing the following syntax:\n\n\tchar pvs_name_buffer[] = \"speedXX-pvsXX-vXX\";\n\nBecause the `pvs_name` needs to be able to be assigned to NULL, the\ntemplate buffer is stored in the pvs_name_buffer and not under the\npvs_name variable."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:15:27.844Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/794ded0bc461287a268bed21fea2eebb6e5d232c"
        },
        {
          "url": "https://git.kernel.org/stable/c/14d260f94ff89543597ffea13db8b277a810e08e"
        },
        {
          "url": "https://git.kernel.org/stable/c/b74ee4e301ca01e431e240c046173332966e2431"
        },
        {
          "url": "https://git.kernel.org/stable/c/01039fb8e90c9cb684430414bff70cea9eb168c5"
        }
      ],
      "title": "cpufreq: qcom: fix writes in read-only memory region",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50239",
    "datePublished": "2025-09-15T14:01:43.916Z",
    "dateReserved": "2025-09-15T13:58:00.971Z",
    "dateUpdated": "2026-05-11T19:15:27.844Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50239",
      "date": "2026-09-14",
      "epss": "0.00159",
      "percentile": "0.05417"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50239\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T14:15:34.130\",\"lastModified\":\"2026-06-17T05:23:03.057\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncpufreq: qcom: fix writes in read-only memory region\\n\\nThis commit fixes a kernel oops because of a write in some read-only memory:\\n\\n\\t[    9.068287] Unable to handle kernel write to read-only memory at virtual address ffff800009240ad8\\n\\t..snip..\\n\\t[    9.138790] Internal error: Oops: 9600004f [#1] PREEMPT SMP\\n\\t..snip..\\n\\t[    9.269161] Call trace:\\n\\t[    9.276271]  __memcpy+0x5c/0x230\\n\\t[    9.278531]  snprintf+0x58/0x80\\n\\t[    9.282002]  qcom_cpufreq_msm8939_name_version+0xb4/0x190\\n\\t[    9.284869]  qcom_cpufreq_probe+0xc8/0x39c\\n\\t..snip..\\n\\nThe following line defines a pointer that point to a char buffer stored\\nin read-only memory:\\n\\n\\tchar *pvs_name = \\\"speedXX-pvsXX-vXX\\\";\\n\\nThis pointer is meant to hold a template \\\"speedXX-pvsXX-vXX\\\" where the\\nXX values get overridden by the qcom_cpufreq_krait_name_version function. Since\\nthe template is actually stored in read-only memory, when the function\\nexecutes the following call we get an oops:\\n\\n\\tsnprintf(*pvs_name, sizeof(\\\"speedXX-pvsXX-vXX\\\"), \\\"speed%d-pvs%d-v%d\\\",\\n\\t\\t speed, pvs, pvs_ver);\\n\\nTo fix this issue, we instead store the template name onto the stack by\\nusing the following syntax:\\n\\n\\tchar pvs_name_buffer[] = \\\"speedXX-pvsXX-vXX\\\";\\n\\nBecause the `pvs_name` needs to be able to be assigned to NULL, the\\ntemplate buffer is stored in the pvs_name_buffer and not under the\\npvs_name variable.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/cpufreq/qcom-cpufreq-nvmem.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a8811ec764f95a04ba82f6f457e28c5e9e36e36b\",\"lessThan\":\"794ded0bc461287a268bed21fea2eebb6e5d232c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a8811ec764f95a04ba82f6f457e28c5e9e36e36b\",\"lessThan\":\"14d260f94ff89543597ffea13db8b277a810e08e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a8811ec764f95a04ba82f6f457e28c5e9e36e36b\",\"lessThan\":\"b74ee4e301ca01e431e240c046173332966e2431\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a8811ec764f95a04ba82f6f457e28c5e9e36e36b\",\"lessThan\":\"01039fb8e90c9cb684430414bff70cea9eb168c5\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/cpufreq/qcom-cpufreq-nvmem.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.152\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.76\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.6\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"5.10.152\",\"matchCriteriaId\":\"413A3350-720B-446B-8C3E-DBB292E6F7C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.76\",\"matchCriteriaId\":\"918A4953-6F82-40F5-B7A9-9836905139C1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.6\",\"matchCriteriaId\":\"98F5FA4A-A33F-4FAD-894E-FDC9D295742A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7E331DA-1FB0-4DEC-91AC-7DA69D461C11\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01039fb8e90c9cb684430414bff70cea9eb168c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/14d260f94ff89543597ffea13db8b277a810e08e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/794ded0bc461287a268bed21fea2eebb6e5d232c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b74ee4e301ca01e431e240c046173332966e2431\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T18:44:55+00:00",
      "cve": "CVE-2022-50239",
      "id": "CVE-2022-50239",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "166",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: cpufreq: qcom: fix writes in read-only memory region",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50239.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-29T02:22:26Z",
      "cve": "CVE-2022-50239",
      "id": "CVE-2022-50239",
      "initial_release_date": "2025-09-17T23:31:50Z",
      "product_status:known_affected": "344",
      "product_status:known_not_affected": "395",
      "product_status:recommended": "235",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50239",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50239.json",
      "version": "36"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.