by Kastro CVE-2022-48829
Linux Linux — NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes
Description · from the CVE record
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
ProductAffectedFixed inSource
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 72c14aed6838b5d90b4dd926b6a339b34bb02e0872c14aed6838b5d90b4dd926b6a339b34bb02e08CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 37f2d2cd8eadddbbd9c7bda327a9393399b2f89b37f2d2cd8eadddbbd9c7bda327a9393399b2f89bCNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0CNA
Linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < a648fdeb7c0e17177a2280344d015dba3fbe3314a648fdeb7c0e17177a2280344d015dba3fbe3314CNA
Linux2.6.12–CNA
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem< V1.1.1V1.1.1siemens-SADP
Scores by source
Linux (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial