CVE-2022-48828

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().

The following products are affected by CVE-2022-48828 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-48828.

URL	Resource
https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b
https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48
https://git.kernel.org/stable/c/d2211e6e34d0755f35e2f8c22d81999fa81cfc71
https://git.kernel.org/stable/c/da22ca1ad548429d7822011c54cfe210718e0aa7
https://git.kernel.org/stable/c/e6faac3f58c7c4176b66f63def17a34232a17b0e
https://lore.kernel.org/linux-cve-announce/2024071652-CVE-2022-48828-97cb@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-48828
https://www.cve.org/CVERecord?id=CVE-2022-48828