CVEvulnerability

CVE-2022-48829

5.5 MEDIUM Published 2024-07-16 Modified 2026-10-14 Official page ↗
Status
Modified
Published
2024-07-16
Last modified
2026-10-14
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes iattr::ia_size is a loff_t, so these NFSv3 procedures must be careful to deal with incoming client size values that are larger than s64_max without corrupting the value. Silently capping the value results in storing a different value than the client passed in which is unexpected behavior, so remove the min_t() check in decode_sattr3(). Note that RFC 1813 permits only the WRITE procedure to return NFS3ERR_FBIG. We believe that NFSv3 reference implementations also return NFS3ERR_FBIG when ia_size is too large.

Affected configurations

• linux linux kernel (< 5.4.295) • linux linux kernel (>= 5.5 < 5.10.220) • linux linux kernel (>= 5.11 < 5.15.24) • linux linux kernel (>= 5.16 < 5.16.10) • linux linux kernel 5.17

References