github - ghsa-j7gw-xcvp-f76q

ghsa-j7gw-xcvp-f76q

Vulnerability from github

Published

2024-07-16 12:30

Modified

2024-07-16 12:30

Details

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().

Show details on source website

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  "aliases": [
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  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix ia_size underflow\n\niattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and\nNFSv4 both define file size as an unsigned 64-bit type. Thus there\nis a range of valid file size values an NFS client can send that is\nalready larger than Linux can handle.\n\nCurrently decode_fattr4() dumps a full u64 value into ia_size. If\nthat value happens to be larger than S64_MAX, then ia_size\nunderflows. I\u0027m about to fix up the NFSv3 behavior as well, so let\u0027s\ncatch the underflow in the common code path: nfsd_setattr().",
  "id": "GHSA-j7gw-xcvp-f76q",
  "modified": "2024-07-16T12:30:41Z",
  "published": "2024-07-16T12:30:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48828"
    },
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  "schema_version": "1.4.0",
  "severity": []
}

cve-2022-48828

Vulnerability from cvelistv5

Published

2024-07-16 11:44

Modified

2024-09-11 17:34

Severity

Summary

NFSD: Fix ia_size underflow

References

URL	Tags
https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b
https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48
https://git.kernel.org/stable/c/da22ca1ad548429d7822011c54cfe210718e0aa7
https://git.kernel.org/stable/c/e6faac3f58c7c4176b66f63def17a34232a17b0e

Impacted products

Vendor	Product
Linux	Linux
Linux	Linux

Show details on NVD website

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