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Avoid use of uninitialized memory while running defragmentPage() on a

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corrupt database file.
dbsqlfuzz 4c45cecc0b255aaf2ea85453ccd17e814fd0b6b2

FossilOrigin-Name: 35e40d75754ec6fb93fe57c6ecbe731104e77c997d7e17ef1a22984837dfcab2
This commit is contained in:
drh
2021-06-07 13:50:36 +00:00
parent fe972341a5
commit ccf0bb49bb
3 changed files with 8 additions and 8 deletions
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manifest
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@@ -1,5 +1,5 @@
C Fix\san\sassert()\sin\sthe\sOP_ParseSchema\sopcode\sthat\smight\sfail\son\sa\scorrupt\ndatabase\sfile\swhen\srunning\swith\sPRAGMA\swritable_schema=ON.\ndbsqlfuzz\se7d743ca65f2767e415095f0c5a49166a0f55eea.
D 2021-06-07T11:50:23.565
C Avoid\suse\sof\suninitialized\smemory\swhile\srunning\sdefragmentPage()\son\sa\ncorrupt\sdatabase\sfile.\ndbsqlfuzz\s4c45cecc0b255aaf2ea85453ccd17e814fd0b6b2
D 2021-06-07T13:50:36.893
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -485,7 +485,7 @@ F src/auth.c 08954fdc4cc2da5264ba5b75cfd90b67a6fc7d1710a02ccf917c38eadec77853
F src/backup.c 3014889fa06e20e6adfa0d07b60097eec1f6e5b06671625f476a714d2356513d
F src/bitvec.c 17ea48eff8ba979f1f5b04cc484c7bb2be632f33
F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
F src/btree.c 6b24d93490ea4450a6800eef046fedf29e5e5ba00efc896eef2da5bb2869ea2e
F src/btree.c 399e1ebcd6c4f9ad47f5457bfe3623441db287f0923433cf6539497791557be8
F src/btree.h 096cc53baa58be22b02c896d1cf933c38cfc6d65f9253c1367ece8cc88a24de5
F src/btreeInt.h 7bc15a24a02662409ebcd6aeaa1065522d14b7fda71573a2b0568b458f514ae0
F src/build.c d766f04ddd88822c2c10cf3c0dfb34b068c45f103f442222038b9eeff02312ca
@@ -1918,7 +1918,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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P 17e26a1f5e3cc4e96b9265dcdbf54f376304b0908f3ff0a0d3df33653e77e5b6
R 2008131d3502f721f33346d6e5ea4f59
P 10801f65af495a999ef61741322ea82dc20bd92ea8e55e4016c409096f38b0d1
R 87c6ad819f9b16a006d2ce2c64be3689
U drh
Z 608a44948c135ddd98aa43f877710cc1
Z ca5dd7010823297422d198ffa35c5cd5

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manifest.uuid
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@@ -1 +1 @@
10801f65af495a999ef61741322ea82dc20bd92ea8e55e4016c409096f38b0d1
35e40d75754ec6fb93fe57c6ecbe731104e77c997d7e17ef1a22984837dfcab2

2
src/btree.c
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@@ -1535,7 +1535,7 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){
if( temp==0 ){
if( cbrk==pc ) continue;
temp = sqlite3PagerTempSpace(pPage->pBt->pPager);
memcpy(&temp[iCellStart], &data[iCellStart], (cbrk+size) - iCellStart);
memcpy(&temp[iCellStart], &data[iCellStart], usableSize - iCellStart);
src = temp;
}
memcpy(&data[cbrk], &src[pc], size);