From: Eric Biggers <ebiggers3@gmail.com>
Date: Sat, 29 Jul 2017 20:39:28 +0000 (-0700)
Subject: win32_apply: bail if paths are too long for a UNICODE_STRING
X-Git-Tag: v1.12.0~1
X-Git-Url: https://wimlib.net/git/?a=commitdiff_plain;h=c0d3fd10d0cba3fedfa917e04d39a7803e34df6e;p=wimlib

win32_apply: bail if paths are too long for a UNICODE_STRING
---

diff --git a/src/win32_apply.c b/src/win32_apply.c
index 96d9df6f..94285aca 100644
--- a/src/win32_apply.c
+++ b/src/win32_apply.c
@@ -1087,6 +1087,12 @@ prepare_target(struct list_head *dentry_list, struct win32_apply_ctx *ctx)
 			8 + 1 + 3);
 
 	ctx->pathbuf.MaximumLength = path_max * sizeof(wchar_t);
+	if (ctx->pathbuf.MaximumLength != path_max * sizeof(wchar_t)) {
+		/* Paths are too long for a UNICODE_STRING! */
+		ERROR("Some paths are too long to extract (> 32768 characters)!");
+		return WIMLIB_ERR_UNSUPPORTED;
+	}
+
 	ctx->pathbuf.Buffer = MALLOC(ctx->pathbuf.MaximumLength);
 	if (!ctx->pathbuf.Buffer)
 		return WIMLIB_ERR_NOMEM;