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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2022-48829

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 72c14aed6838b5d90b4dd926b6a339b34bb02e08affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a231ae6bb50e7c0a9e9efd7b0d10687f1d71b3a3affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 37f2d2cd8eadddbbd9c7bda327a9393399b2f89baffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < aa9051ddb4b378bd22e72a67bc77b9fc1482c5f0affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a648fdeb7c0e17177a2280344d015dba3fbe3314affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 5.4.295 to ≤ 5.4.*unaffected
  • 5.10.220 to ≤ 5.10.*unaffected
  • 5.15.24 to ≤ 5.15.*unaffected
  • 5.16.10 to ≤ 5.16.*unaffected
  • 5.17 to ≤ *unaffected

References