From: drh <>
Date: Wed, 31 Dec 2025 01:19:51 +0000 (+0000)
Subject: Use sqlite3_malloc64() in all places in the compress.c extension to avoid
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f8bd7df9965ce5f0f9ff92eead51bf621210861b;p=thirdparty%2Fsqlite.git

Use sqlite3_malloc64() in all places in the compress.c extension to avoid
integer overflow.
[forum:/forumpost/2025-12-31T01:04:00z|Forum post 2025-12-31T01:04:00z].

FossilOrigin-Name: 7ceaf1f0c3d9b96d2224ce6526fb3092b9e1673573e3d7dd898b2a135e23027d
---

diff --git a/ext/misc/compress.c b/ext/misc/compress.c
index 6b034eb45f..48ea5182d7 100644
--- a/ext/misc/compress.c
+++ b/ext/misc/compress.c
@@ -59,7 +59,7 @@ static void compressFunc(
   pIn = sqlite3_value_blob(argv[0]);
   nIn = sqlite3_value_bytes(argv[0]);
   nOut = 13 + nIn + (nIn+999)/1000;
-  pOut = sqlite3_malloc( nOut+5 );
+  pOut = sqlite3_malloc64( nOut+5 );
   for(i=4; i>=0; i--){
     x[i] = (nIn >> (7*(4-i)))&0x7f;
   }
@@ -98,7 +98,7 @@ static void uncompressFunc(
     nOut = (nOut<<7) | (pIn[i]&0x7f);
     if( (pIn[i]&0x80)!=0 ){ i++; break; }
   }
-  pOut = sqlite3_malloc( nOut+1 );
+  pOut = sqlite3_malloc64( nOut+1 );
   rc = uncompress(pOut, &nOut, &pIn[i], nIn-i);
   if( rc==Z_OK ){
     sqlite3_result_blob(context, pOut, nOut, sqlite3_free);
diff --git a/manifest b/manifest
index 0ba81c8d71..d7e83cc9df 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sa\stypo\sin\s[0819fe670f9ceec7]\sthat\slead\sto\sincomplete\sprotection\sagainst\nbuffer\soverflow\sin\sthe\szipfile\sextension.\n[forum:/forumpost/2025-12-30T23:57:19z|Forum\spost\s2025-12-30T23:57:19z]
-D 2025-12-31T01:01:14.348
+C Use\ssqlite3_malloc64()\sin\sall\splaces\sin\sthe\scompress.c\sextension\sto\savoid\ninteger\soverflow.\n[forum:/forumpost/2025-12-31T01:04:00z|Forum\spost\s2025-12-31T01:04:00z].
+D 2025-12-31T01:19:51.430
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -366,7 +366,7 @@ F ext/misc/btreeinfo.c 8f5e6da2c82ec2f06ee0216e922370a436dafdbb06ffa7a552203515f
 F ext/misc/cksumvfs.c 9d7d0cf1a8893ac5d48922bfe9f3f217b4a61a6265f559263a02bb2001259913
 F ext/misc/closure.c 5559daf1daf742228431db929d1aa86dd535a4224cc634a81d2fd0d1e6ad7839
 F ext/misc/completion.c c27b64fdd0943c1b7f152376599814cee2641f7d67a7bb9bd2b957c2a64a5591
-F ext/misc/compress.c 2c79a74330e0e0ba6cb3f7397f8ba5af12d46377ef5d3ee075e12dd8a6ed57f0
+F ext/misc/compress.c 8191118b9b73e7796c961790db62d35d9b0fb724b045e005a5713dc9e0795565
 F ext/misc/csv.c 22eb38dcf2a9b6b440969874bcc9c9f829864fbc84fd1f6428ef217e666565d2
 F ext/misc/dbdump.c 678f1b9ae2317b4473f65d03132a2482c3f4b08920799ed80feedd2941a06680
 F ext/misc/decimal.c d4883de142f6dcd36eda23da40b55e2b51374e7b01eb54a7173940191389fc5e
@@ -2189,8 +2189,8 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
 F tool/warnings.sh d924598cf2f55a4ecbc2aeb055c10bd5f48114793e7ba25f9585435da29e7e98
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
 F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
-P 39e15ce3d6c42b13d0c1164a161e7b5d5d8382050c2729961733ddef695c9116
-R dac54af498b542b7ef24ee298ee91616
+P a6abbadacbb88c1ddcc236b40fb34eddf3bb0891189bd00a5af8d34b42871967
+R 4d4ba6cd05b73f820f444cac9cb653f3
 U drh
-Z 5355105f427fe027a64949ee9b12dd91
+Z f9bce64a41c5952b325129f064bd78f2
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 58dd3d798a..045475543f 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-a6abbadacbb88c1ddcc236b40fb34eddf3bb0891189bd00a5af8d34b42871967
+7ceaf1f0c3d9b96d2224ce6526fb3092b9e1673573e3d7dd898b2a135e23027d