CVE-2022-48829

NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes

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.

N/A

CVSS

Severity:

EPSS 0.07%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3
https://git.kernel.org/stable/c/37f2d2cd8eadddbbd9c7bda327a9393399b2f89b
https://git.kernel.org/stable/c/aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0
https://git.kernel.org/stable/c/a648fdeb7c0e17177a2280344d015dba3fbe3314

Frequently Asked Questions

What is the severity of CVE-2022-48829?: CVE-2022-48829 has not yet been assigned a CVSS score.
How to fix CVE-2022-48829?: To fix CVE-2022-48829, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-48829 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-48829 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-48829?: CVE-2022-48829 affects Linux Linux, Linux Linux.

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