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VULNERABILITIES

CVE-2022-48828 Details

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().

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA: kernel.orgCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-265688.html siemens-SADP
https://cert-portal.siemens.com/productcert/html/ssa-355557.html siemens-SADP
https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b kernel.orgPatch
https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48 kernel.orgPatch
https://git.kernel.org/stable/c/d2211e6e34d0755f35e2f8c22d81999fa81cfc71 kernel.orgPatch

see all 11 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-191Integer Underflow (Wrap or Wraparound)[email protected]

Affected Products

ProductVersions
linux linux kernel
< 5.4.295
>= 5.5, < 5.10.220
>= 5.11, < 5.15.24
>= 5.16, < 5.16.10
5.17 rc1

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2022-48828
NVD Published Date:
Jul 16, 2024
NVD Last Modified:
Aug 4, 2026
Source:
kernel.org
CVE-2022-48828 Details - Not Deferred