cve-2022-48828
Vulnerability from cvelistv5
Published
2024-07-16 11:44
Modified
2024-09-11 17:34
Severity
Summary
NFSD: Fix ia_size underflow
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website


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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix ia_size underflow\n\niattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and\nNFSv4 both define file size as an unsigned 64-bit type. Thus there\nis a range of valid file size values an NFS client can send that is\nalready larger than Linux can handle.\n\nCurrently decode_fattr4() dumps a full u64 value into ia_size. If\nthat value happens to be larger than S64_MAX, then ia_size\nunderflows. I\u0027m about to fix up the NFSv3 behavior as well, so let\u0027s\ncatch the underflow in the common code path: nfsd_setattr()."
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    "dateReserved": "2024-07-16T11:38:08.903Z",
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