CVE-2022-48828

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 16 Jul 2024, 11:44
Last modified:12 May 2026, 10:12

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Jul 2024, 11:44
Published
Vulnerability first disclosed
12 May 2026, 10:12
Last Modified
Vulnerability information updated

Description

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().

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-191•Integer Underflow (Wrap or Wraparound)

    The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

Affected Systems

  • linux•linux

    ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d2211e6e34d0755f35e2f8c22d81999fa81cfc71 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 38d02ba22e43b6fc7d291cf724bc6e3b7be6626b | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8e0ecaf7a7e57b30284d6b3289cc436100fadc48 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < da22ca1ad548429d7822011c54cfe210718e0aa7 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e6faac3f58c7c4176b66f63def17a34232a17b0e | 2.6.12

  • linux•linux_kernel

    < 5.4.295 | ≥ 5.5, < 5.10.220 | ≥ 5.11, < 5.15.24 | ≥ 5.16, < 5.16.10 | 5.17:rc1 | 5.17:rc2 | 5.17:rc3

References (7)