CVE-2022-48828 (GCVE-0-2022-48828)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:44 – Updated: 2026-08-05 08:52
VLAI
Title
NFSD: Fix ia_size underflow
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix ia_size underflow iattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and NFSv4 both define file size as an unsigned 64-bit type. Thus there is a range of valid file size values an NFS client can send that is already larger than Linux can handle. Currently decode_fattr4() dumps a full u64 value into ia_size. If that value happens to be larger than S64_MAX, then ia_size underflows. I'm about to fix up the NFSv3 behavior as well, so let's catch the underflow in the common code path: nfsd_setattr().
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:57 UTC
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d2211e6e34d0755f35e2f8c22d81999fa81cfc71 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 38d02ba22e43b6fc7d291cf724bc6e3b7be6626b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8e0ecaf7a7e57b30284d6b3289cc436100fadc48 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < da22ca1ad548429d7822011c54cfe210718e0aa7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e6faac3f58c7c4176b66f63def17a34232a17b0e (git)
Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.295 , ≤ 5.4.* (semver)
Unaffected: 5.10.220 , ≤ 5.10.* (semver)
Unaffected: 5.15.24 , ≤ 5.15.* (semver)
Unaffected: 5.16.10 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Siemens RUGGEDCOM RST2428P Unaffected: 0 , < * (custom)
Create a notification for this product.
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Unaffected: 0 , < * (custom)
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
Create a notification for this product.
Show details on NVD website
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Tambi\u00e9n estoy a punto de arreglar el comportamiento de NFSv3, as\u00ed que detectemos el desbordamiento en la ruta del c\u00f3digo com\u00fan: nfsd_setattr().\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/nfsd/vfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"d2211e6e34d0755f35e2f8c22d81999fa81cfc71\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"38d02ba22e43b6fc7d291cf724bc6e3b7be6626b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"8e0ecaf7a7e57b30284d6b3289cc436100fadc48\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"da22ca1ad548429d7822011c54cfe210718e0aa7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"e6faac3f58c7c4176b66f63def17a34232a17b0e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/nfsd/vfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.295\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.220\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.24\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.10\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"RUGGEDCOM RST2428P\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SCALANCE XCM-/XRM-/XCH-/XRH-300 family\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 TM MFP - 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T19:46:48+00:00",
      "cve": "CVE-2022-48828",
      "id": "CVE-2022-48828",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "298",
      "product_status:known_affected": "90",
      "product_status:known_not_affected": "120",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NFSD: Fix ia_size underflow",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48828.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-08T23:34:15Z",
      "cve": "CVE-2022-48828",
      "id": "CVE-2022-48828",
      "initial_release_date": "2024-07-18T03:06:00Z",
      "product_status:known_affected": "422",
      "product_status:known_not_affected": "76",
      "product_status:recommended": "510",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-48828",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-48828.json",
      "version": "50"
    },
    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2022-48828\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:52:33.198Z\", \"dateReserved\": \"2024-07-16T11:38:08.903Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-16T11:44:12.660Z\", \"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.