CVE-2022-49210 (GCVE-0-2022-49210)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:55
VLAI
Title
MIPS: pgalloc: fix memory leak caused by pgd_free()
Summary
In the Linux kernel, the following vulnerability has been resolved: MIPS: pgalloc: fix memory leak caused by pgd_free() pgd page is freed by generic implementation pgd_free() since commit f9cb654cb550 ("asm-generic: pgalloc: provide generic pgd_free()"), however, there are scenarios that the system uses more than one page as the pgd table, in such cases the generic implementation pgd_free() won't be applicable anymore. For example, when PAGE_SIZE_4KB is enabled and MIPS_VA_BITS_48 is not enabled in a 64bit system, the macro "PGD_ORDER" will be set as "1", which will cause allocating two pages as the pgd table. Well, at the same time, the generic implementation pgd_free() just free one pgd page, which will result in the memory leak. The memory leak can be easily detected by executing shell command: "while true; do ls > /dev/null; grep MemFree /proc/meminfo; done"
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f9cb654cb550b7b87e8608b14fc3eca432429ffe , < fa3d44424579972cc7c4fac3d9cf227798ebdfa0 (git)
Affected: f9cb654cb550b7b87e8608b14fc3eca432429ffe , < d29cda15cab086d82d692de016f7249545d4b6b4 (git)
Affected: f9cb654cb550b7b87e8608b14fc3eca432429ffe , < 5a8501d34b261906e4c76ec9da679f2cb4d309ed (git)
Affected: f9cb654cb550b7b87e8608b14fc3eca432429ffe , < 1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1 (git)
Affected: f9cb654cb550b7b87e8608b14fc3eca432429ffe , < 2bc5bab9a763d520937e4f3fe8df51c6a1eceb97 (git)
Create a notification for this product.
Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49210",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:46:51.248312Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:47:06.119Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/mips/include/asm/pgalloc.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fa3d44424579972cc7c4fac3d9cf227798ebdfa0",
              "status": "affected",
              "version": "f9cb654cb550b7b87e8608b14fc3eca432429ffe",
              "versionType": "git"
            },
            {
              "lessThan": "d29cda15cab086d82d692de016f7249545d4b6b4",
              "status": "affected",
              "version": "f9cb654cb550b7b87e8608b14fc3eca432429ffe",
              "versionType": "git"
            },
            {
              "lessThan": "5a8501d34b261906e4c76ec9da679f2cb4d309ed",
              "status": "affected",
              "version": "f9cb654cb550b7b87e8608b14fc3eca432429ffe",
              "versionType": "git"
            },
            {
              "lessThan": "1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1",
              "status": "affected",
              "version": "f9cb654cb550b7b87e8608b14fc3eca432429ffe",
              "versionType": "git"
            },
            {
              "lessThan": "2bc5bab9a763d520937e4f3fe8df51c6a1eceb97",
              "status": "affected",
              "version": "f9cb654cb550b7b87e8608b14fc3eca432429ffe",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/mips/include/asm/pgalloc.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.110",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.33",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.19",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.2",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: pgalloc: fix memory leak caused by pgd_free()\n\npgd page is freed by generic implementation pgd_free() since commit\nf9cb654cb550 (\"asm-generic: pgalloc: provide generic pgd_free()\"),\nhowever, there are scenarios that the system uses more than one page as\nthe pgd table, in such cases the generic implementation pgd_free() won\u0027t\nbe applicable anymore. For example, when PAGE_SIZE_4KB is enabled and\nMIPS_VA_BITS_48 is not enabled in a 64bit system, the macro \"PGD_ORDER\"\nwill be set as \"1\", which will cause allocating two pages as the pgd\ntable. Well, at the same time, the generic implementation pgd_free()\njust free one pgd page, which will result in the memory leak.\n\nThe memory leak can be easily detected by executing shell command:\n\"while true; do ls \u003e /dev/null; grep MemFree /proc/meminfo; done\""
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:55:16.710Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fa3d44424579972cc7c4fac3d9cf227798ebdfa0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d29cda15cab086d82d692de016f7249545d4b6b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a8501d34b261906e4c76ec9da679f2cb4d309ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/2bc5bab9a763d520937e4f3fe8df51c6a1eceb97"
        }
      ],
      "title": "MIPS: pgalloc: fix memory leak caused by pgd_free()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49210",
    "datePublished": "2025-02-26T01:55:47.679Z",
    "dateReserved": "2025-02-26T01:49:39.291Z",
    "dateUpdated": "2026-05-11T18:55:16.710Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49210",
      "date": "2026-07-16",
      "epss": "0.00245",
      "percentile": "0.15733"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49210\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:58.107\",\"lastModified\":\"2026-06-17T05:17:23.590\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nMIPS: pgalloc: fix memory leak caused by pgd_free()\\n\\npgd page is freed by generic implementation pgd_free() since commit\\nf9cb654cb550 (\\\"asm-generic: pgalloc: provide generic pgd_free()\\\"),\\nhowever, there are scenarios that the system uses more than one page as\\nthe pgd table, in such cases the generic implementation pgd_free() won\u0027t\\nbe applicable anymore. For example, when PAGE_SIZE_4KB is enabled and\\nMIPS_VA_BITS_48 is not enabled in a 64bit system, the macro \\\"PGD_ORDER\\\"\\nwill be set as \\\"1\\\", which will cause allocating two pages as the pgd\\ntable. Well, at the same time, the generic implementation pgd_free()\\njust free one pgd page, which will result in the memory leak.\\n\\nThe memory leak can be easily detected by executing shell command:\\n\\\"while true; do ls \u003e /dev/null; grep MemFree /proc/meminfo; done\\\"\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: MIPS: pgalloc: reparar p\u00e9rdida de memoria causada por pgd_free() La p\u00e1gina pgd es liberada por la implementaci\u00f3n gen\u00e9rica pgd_free() desde el commit f9cb654cb550 (\\\"asm-generic: pgalloc: proporcionar pgd_free() gen\u00e9rico\\\"), sin embargo, hay escenarios en los que el sistema usa m\u00e1s de una p\u00e1gina como la tabla pgd, en tales casos la implementaci\u00f3n gen\u00e9rica pgd_free() ya no ser\u00e1 aplicable. Por ejemplo, cuando PAGE_SIZE_4KB est\u00e1 habilitado y MIPS_VA_BITS_48 no est\u00e1 habilitado en un sistema de 64 bits, la macro \\\"PGD_ORDER\\\" se establecer\u00e1 como \\\"1\\\", lo que provocar\u00e1 la asignaci\u00f3n de dos p\u00e1ginas como la tabla pgd. Bueno, al mismo tiempo, la implementaci\u00f3n gen\u00e9rica pgd_free() solo libera una p\u00e1gina pgd, lo que provocar\u00e1 la p\u00e9rdida de memoria. La p\u00e9rdida de memoria se puede detectar f\u00e1cilmente ejecutando el comando de shell: \\\"while true; do ls \u0026gt; /dev/null; grep MemFree /proc/meminfo; done\\\"\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/mips/include/asm/pgalloc.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f9cb654cb550b7b87e8608b14fc3eca432429ffe\",\"lessThan\":\"fa3d44424579972cc7c4fac3d9cf227798ebdfa0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f9cb654cb550b7b87e8608b14fc3eca432429ffe\",\"lessThan\":\"d29cda15cab086d82d692de016f7249545d4b6b4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f9cb654cb550b7b87e8608b14fc3eca432429ffe\",\"lessThan\":\"5a8501d34b261906e4c76ec9da679f2cb4d309ed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f9cb654cb550b7b87e8608b14fc3eca432429ffe\",\"lessThan\":\"1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f9cb654cb550b7b87e8608b14fc3eca432429ffe\",\"lessThan\":\"2bc5bab9a763d520937e4f3fe8df51c6a1eceb97\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/mips/include/asm/pgalloc.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.110\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.33\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.19\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.2\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18\",\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T19:46:51.248312Z\",\"id\":\"CVE-2022-49210\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.9\",\"versionEndExcluding\":\"5.10.110\",\"matchCriteriaId\":\"2F97CB26-001B-4811-8A9D-40FE3DB060DB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.33\",\"matchCriteriaId\":\"27C42AE8-B387-43E2-938A-E1C8B40BE6D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.19\",\"matchCriteriaId\":\"20C43679-0439-405A-B97F-685BEE50613B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"5.17.2\",\"matchCriteriaId\":\"210C679C-CF84-44A3-8939-E629C87E54BF\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2bc5bab9a763d520937e4f3fe8df51c6a1eceb97\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5a8501d34b261906e4c76ec9da679f2cb4d309ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d29cda15cab086d82d692de016f7249545d4b6b4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fa3d44424579972cc7c4fac3d9cf227798ebdfa0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:01:20+00:00",
      "cve": "CVE-2022-49210",
      "id": "CVE-2022-49210",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: MIPS: pgalloc: fix memory leak caused by pgd_free()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49210.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"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\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49210\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:46:51.248312Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:09:31.254Z\"}}], \"cna\": {\"title\": \"MIPS: pgalloc: fix memory leak caused by pgd_free()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f9cb654cb550b7b87e8608b14fc3eca432429ffe\", \"lessThan\": \"fa3d44424579972cc7c4fac3d9cf227798ebdfa0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f9cb654cb550b7b87e8608b14fc3eca432429ffe\", \"lessThan\": \"d29cda15cab086d82d692de016f7249545d4b6b4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f9cb654cb550b7b87e8608b14fc3eca432429ffe\", \"lessThan\": \"5a8501d34b261906e4c76ec9da679f2cb4d309ed\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f9cb654cb550b7b87e8608b14fc3eca432429ffe\", \"lessThan\": \"1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f9cb654cb550b7b87e8608b14fc3eca432429ffe\", \"lessThan\": \"2bc5bab9a763d520937e4f3fe8df51c6a1eceb97\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/mips/include/asm/pgalloc.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.9\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.9\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.110\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/mips/include/asm/pgalloc.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/fa3d44424579972cc7c4fac3d9cf227798ebdfa0\"}, {\"url\": \"https://git.kernel.org/stable/c/d29cda15cab086d82d692de016f7249545d4b6b4\"}, {\"url\": \"https://git.kernel.org/stable/c/5a8501d34b261906e4c76ec9da679f2cb4d309ed\"}, {\"url\": \"https://git.kernel.org/stable/c/1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1\"}, {\"url\": \"https://git.kernel.org/stable/c/2bc5bab9a763d520937e4f3fe8df51c6a1eceb97\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nMIPS: pgalloc: fix memory leak caused by pgd_free()\\n\\npgd page is freed by generic implementation pgd_free() since commit\\nf9cb654cb550 (\\\"asm-generic: pgalloc: provide generic pgd_free()\\\"),\\nhowever, there are scenarios that the system uses more than one page as\\nthe pgd table, in such cases the generic implementation pgd_free() won\u0027t\\nbe applicable anymore. For example, when PAGE_SIZE_4KB is enabled and\\nMIPS_VA_BITS_48 is not enabled in a 64bit system, the macro \\\"PGD_ORDER\\\"\\nwill be set as \\\"1\\\", which will cause allocating two pages as the pgd\\ntable. Well, at the same time, the generic implementation pgd_free()\\njust free one pgd page, which will result in the memory leak.\\n\\nThe memory leak can be easily detected by executing shell command:\\n\\\"while true; do ls \u003e /dev/null; grep MemFree /proc/meminfo; done\\\"\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.110\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.33\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.19\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.2\", \"versionStartIncluding\": \"5.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"5.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:55:16.710Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49210\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:55:16.710Z\", \"dateReserved\": \"2025-02-26T01:49:39.291Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:55:47.679Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.