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sys: ea: buffers from user mode fs can have zero length

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This commit is contained in:
Bill Zissimopoulos 2019-04-17 14:40:06 -07:00
parent 6406246ce2
commit c6b7b7586e
1 changed files with 4 additions and 0 deletions
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4
src/sys/util.c
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@ -683,6 +683,10 @@ NTSTATUS FspEaBufferFromFileSystemValidate(
*PErrorOffset = 0;
/* EA buffers from the user mode file system are allowed to have zero length */
if (0 == Length)
return STATUS_SUCCESS;
/* EA buffers from the user mode file system are allowed to end with NextEntryOffset != 0 */
for (PFILE_FULL_EA_INFORMATION Ea = Buffer, EaEnd = (PVOID)((PUINT8)Ea + Length);
EaEnd > Ea; Ea = FSP_NEXT_EA(Ea, EaEnd))