CVE-2022-48987 (GCVE-0-2022-48987)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2025-05-04 08:27
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-dv-timings.c: fix too strict blanking sanity checks Sanity checks were added to verify the v4l2_bt_timings blanking fields in order to avoid integer overflows when userspace passes weird values. But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields. And that can fail with these checks. So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that. That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 15ded23db134da975b49ea99770de0346c193b24 , < 0d73b49c4037199472b29574ae21c21aef493971 (git)
Affected: 3d43b2b8a3cdadd6cef9ac8ef5d156b6214a01c8 , < a2b56627c0d13009e02f6f2c0206c0451ed19a0e (git)
Affected: 9cf9211635b68e8e0c8cb88d43ca7dc83e4632aa , < 2572ab14b73aa45b6ae7e4c089ccf119fed5cf89 (git)
Affected: b4a3a01762ae072c7f6ff2ff53b5019761288346 , < 4afc77068e36cee45b39d4fdc7513de26980f72c (git)
Affected: 683015ae163481457a16fad2317af66360dc4762 , < 32f01f0306a98629508f84d7ef0d1d037bc274a2 (git)
Affected: 491c0959f01d87bcbd5a1498bc70e0a3382c65a8 , < 6fb8bc29bfa80707994a63cc97e2f9920e0b0608 (git)
Affected: dc7276c3f6ca008be1faf531f84b49906c9bcf7f , < d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3 (git)
Affected: 4b6d66a45ed34a15721cb9e11492fa1a24bc83df , < 5eef2141776da02772c44ec406d6871a790761ee (git)
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    Linux Linux Affected: 4.9.332 , < 4.9.336 (semver)
Affected: 4.14.298 , < 4.14.302 (semver)
Affected: 4.19.264 , < 4.19.269 (semver)
Affected: 5.4.223 , < 5.4.227 (semver)
Affected: 5.10.153 , < 5.10.159 (semver)
Affected: 5.15.77 , < 5.15.83 (semver)
Affected: 6.0.7 , < 6.0.13 (semver)
Create a notification for this product.
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Pero eso supon\u00eda que el espacio de usuario rellenar\u00eda correctamente los valores de front porch, back porch y sync, pero a veces todo lo que sabes es el borrado total, que luego se asigna a solo uno de estos campos. Y eso puede fallar con estas comprobaciones. As\u00ed que, en su lugar, establece un m\u00e1ximo para el borrado horizontal y vertical total y comprueba que cada campo permanezca por debajo de eso. Eso sigue siendo suficiente para evitar desbordamientos de enteros, pero tambi\u00e9n permite m\u00e1s flexibilidad en c\u00f3mo el espacio de usuario rellena estos campos.\"}],\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-190\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.332\",\"versionEndExcluding\":\"4.9.336\",\"matchCriteriaId\":\"1EA5E6E0-F60E-4B95-AE97-C3027AA27388\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.298\",\"versionEndExcluding\":\"4.14.302\",\"matchCriteriaId\":\"8951F556-AF07-4129-996D-5BB44778FC95\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.264\",\"versionEndExcluding\":\"4.19.269\",\"matchCriteriaId\":\"74A39CCD-7EBA-4ED1-A24C-C1C0F8902BDD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.226\",\"versionEndExcluding\":\"5.4.227\",\"matchCriteriaId\":\"72E8F2FD-FA28-4184-BEFD-92915760FB87\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.153\",\"versionEndExcluding\":\"5.10.159\",\"matchCriteriaId\":\"F188CD3F-F2C5-4C45-A3C3-B105BFD832E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.77\",\"versionEndExcluding\":\"5.15.83\",\"matchCriteriaId\":\"60E56598-983B-4E47-B87D-9B08693E8368\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0.7\",\"versionEndExcluding\":\"6.0.13\",\"matchCriteriaId\":\"143D804C-0BEB-4434-B48B-1CA625157A7C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d73b49c4037199472b29574ae21c21aef493971\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2572ab14b73aa45b6ae7e4c089ccf119fed5cf89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/32f01f0306a98629508f84d7ef0d1d037bc274a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4afc77068e36cee45b39d4fdc7513de26980f72c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5eef2141776da02772c44ec406d6871a790761ee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6fb8bc29bfa80707994a63cc97e2f9920e0b0608\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a2b56627c0d13009e02f6f2c0206c0451ed19a0e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d3d14cdf1c7ae2caa3e999bae95ba99e955fb7c3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2022-48987\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:27:34.560Z\", \"dateReserved\": \"2024-08-22T01:27:53.634Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:03.328Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

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.