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ubuntucveUbuntu.comUB:CVE-2022-48829
HistoryJul 16, 2024 - 12:00 a.m.

CVE-2022-48829

2024-07-1600:00:00
ubuntu.com
ubuntu.com
4
linux kernel
nfsd
vulnerability
fix
nfsv3
file sizes

AI Score

6.9

Confidence

Low

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.