CVE-2022-48757 (GCVE-0-2022-48757)

Vulnerability from cvelistv5 – Published: 2024-06-20 11:13 – Updated: 2026-05-11 18:46
VLAI
Title
net: fix information leakage in /proc/net/ptype
Summary
In the Linux kernel, the following vulnerability has been resolved: net: fix information leakage in /proc/net/ptype In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new `packet_type` added by this packet socket by reading `/proc/net/ptype` file. This is minor information leakage as packet socket is namespace aware. Add a net pointer in `packet_type` to keep the net namespace of of corresponding packet socket. In `ptype_seq_show`, this net pointer must be checked when it is not NULL.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < 8f88c78d24f6f346919007cd459fd7e51a8c7779 (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < be1ca30331c7923c6f376610c1bd6059be9b1908 (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < c38023032a598ec6263e008d62c7f02def72d5c7 (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < b67ad6170c0ea87391bb253f35d1f78857736e54 (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < e372ecd455b6ebc7720f52bf4b5f5d44d02f2092 (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < db044d97460ea792110eb8b971e82569ded536c6 (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < e43669c77cb3a742b7d84ecdc7c68c4167a7709b (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < 839ec7039513a4f84bfbaff953a9393471176bee (git)
Affected: 2feb27dbe00cbb4f7d31f90acf6bd0d751dd0a50 , < 47934e06b65637c88a762d9c98329ae6e3238888 (git)
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Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 4.4.302 , ≤ 4.4.* (semver)
Unaffected: 4.9.300 , ≤ 4.9.* (semver)
Unaffected: 4.14.265 , ≤ 4.14.* (semver)
Unaffected: 4.19.228 , ≤ 4.19.* (semver)
Unaffected: 5.4.176 , ≤ 5.4.* (semver)
Unaffected: 5.10.96 , ≤ 5.10.* (semver)
Unaffected: 5.15.19 , ≤ 5.15.* (semver)
Unaffected: 5.16.5 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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In `ptype_seq_show`, this net pointer\\nmust be checked when it is not NULL.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corrige la fuga de informaci\u00f3n en /proc/net/ptype en un espacio de nombres de red, despu\u00e9s de crear un socket de paquetes sin vincularlo a un dispositivo, los usuarios de otros espacios de nombres de red pueden observar la nueva `packet_type` agregado por este socket de paquete leyendo el archivo `/proc/net/ptype`. Esta es una fuga de informaci\u00f3n menor ya que el socket del paquete reconoce el espacio de nombres. Agregue un puntero de red en `packet_type` para mantener el espacio de nombres de red del socket de paquete correspondiente. En `ptype_seq_show`, este puntero de red debe verificarse cuando no sea NULL.\"}],\"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-668\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.26\",\"versionEndExcluding\":\"4.4.302\",\"matchCriteriaId\":\"B484AD73-0FB6-4361-A7D3-D60042DFDC88\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.5\",\"versionEndExcluding\":\"4.9.300\",\"matchCriteriaId\":\"A3BD638C-9597-4C2B-8024-32F57E1B53E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.265\",\"matchCriteriaId\":\"4F849B5B-93E9-438A-AE05-0380EC168436\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.228\",\"matchCriteriaId\":\"87288F16-8DE4-4680-95D9-8601B47620D7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.176\",\"matchCriteriaId\":\"581D4C61-D3FC-4DB2-85E3-EE596EEBA89E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.96\",\"matchCriteriaId\":\"27A6621A-A196-4220-957F-334B9124E477\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.19\",\"matchCriteriaId\":\"DF69DD7C-FD57-4914-ABB0-FAEF87B0289D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.5\",\"matchCriteriaId\":\"1AD9E77E-B27E-450C-8FD8-B64EC5FB002D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/47934e06b65637c88a762d9c98329ae6e3238888\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/839ec7039513a4f84bfbaff953a9393471176bee\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7\",\"source\":\"af854a3a-2127-422b-91ae-364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    "vulnrichment": {
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\"version\": \"5.16.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/linux/netdevice.h\", \"net/core/net-procfs.c\", \"net/packet/af_packet.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8f88c78d24f6f346919007cd459fd7e51a8c7779\"}, {\"url\": \"https://git.kernel.org/stable/c/be1ca30331c7923c6f376610c1bd6059be9b1908\"}, {\"url\": \"https://git.kernel.org/stable/c/c38023032a598ec6263e008d62c7f02def72d5c7\"}, {\"url\": \"https://git.kernel.org/stable/c/b67ad6170c0ea87391bb253f35d1f78857736e54\"}, {\"url\": \"https://git.kernel.org/stable/c/e372ecd455b6ebc7720f52bf4b5f5d44d02f2092\"}, {\"url\": \"https://git.kernel.org/stable/c/db044d97460ea792110eb8b971e82569ded536c6\"}, {\"url\": \"https://git.kernel.org/stable/c/e43669c77cb3a742b7d84ecdc7c68c4167a7709b\"}, 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This is minor information leakage as packet socket is\\nnamespace aware.\\n\\nAdd a net pointer in `packet_type` to keep the net namespace of\\nof corresponding packet socket. 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      "cveMetadata": "{\"cveId\": \"CVE-2022-48757\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:22:27.780Z\", \"dateReserved\": \"2024-06-20T11:09:39.059Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-20T11:13:36.529Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.