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CVE-2022-49644 (GCVE-0-2022-49644)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:03
VLAI
Title
drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector() If drm_connector_init fails, intel_connector_free will be called to take care of proper free. So it is necessary to drop the refcount of port before intel_connector_free. (cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:33 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 091a4f91942a4396c67e5747f5cb38c6396d1fc5 , < 72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5 (git)
Affected: 091a4f91942a4396c67e5747f5cb38c6396d1fc5 , < 592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1 (git)
Affected: 091a4f91942a4396c67e5747f5cb38c6396d1fc5 , < 505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218 (git)
Affected: 091a4f91942a4396c67e5747f5cb38c6396d1fc5 , < a91522b4279bebb098106a19b91f82b9c3213be9 (git)
Affected: 091a4f91942a4396c67e5747f5cb38c6396d1fc5 , < 85144df9ff4652816448369de76897c57cbb1b93 (git)
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Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.4.207 , ≤ 5.4.* (semver)
Unaffected: 5.10.132 , ≤ 5.10.* (semver)
Unaffected: 5.15.56 , ≤ 5.15.* (semver)
Unaffected: 5.18.13 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "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-2022-49644\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:33:51.519733Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:52:29.238Z\"}}], \"cna\": {\"title\": \"drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"091a4f91942a4396c67e5747f5cb38c6396d1fc5\", \"lessThan\": \"72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"091a4f91942a4396c67e5747f5cb38c6396d1fc5\", \"lessThan\": \"592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"091a4f91942a4396c67e5747f5cb38c6396d1fc5\", \"lessThan\": \"505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"091a4f91942a4396c67e5747f5cb38c6396d1fc5\", \"lessThan\": \"a91522b4279bebb098106a19b91f82b9c3213be9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"091a4f91942a4396c67e5747f5cb38c6396d1fc5\", \"lessThan\": \"85144df9ff4652816448369de76897c57cbb1b93\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/gpu/drm/i915/display/intel_dp_mst.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.207\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.132\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.56\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/gpu/drm/i915/display/intel_dp_mst.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5\"}, {\"url\": \"https://git.kernel.org/stable/c/592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1\"}, {\"url\": \"https://git.kernel.org/stable/c/505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218\"}, {\"url\": \"https://git.kernel.org/stable/c/a91522b4279bebb098106a19b91f82b9c3213be9\"}, {\"url\": \"https://git.kernel.org/stable/c/85144df9ff4652816448369de76897c57cbb1b93\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()\\n\\nIf drm_connector_init fails, intel_connector_free will be called to take\\ncare of proper free. So it is necessary to drop the refcount of port\\nbefore intel_connector_free.\\n\\n(cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.207\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.132\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.56\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.13\", \"versionStartIncluding\": \"4.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"4.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:03:55.429Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49644\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:03:55.429Z\", \"dateReserved\": \"2025-02-26T02:21:30.432Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:23:50.134Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.