Fix a null-pointer dereference that could occur in fts5 with a corrupt

database.

FossilOrigin-Name: b0a49d5e6df116bb5eacb60a0bb0f482760aec38bd417d4250d9e57d43bdbb13
This commit is contained in:
dan 2018-12-27 07:46:37 +00:00
parent bdefaf08ee
commit cd80dc3667
4 changed files with 99 additions and 15 deletions

View File

@ -892,13 +892,18 @@ static int fts5StructureDecode(
if( rc==SQLITE_OK ){
pLvl->nSeg = nTotal;
for(iSeg=0; iSeg<nTotal; iSeg++){
Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg];
if( i>=nData ){
rc = FTS5_CORRUPT;
break;
}
i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].iSegid);
i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoFirst);
i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoLast);
i += fts5GetVarint32(&pData[i], pSeg->iSegid);
i += fts5GetVarint32(&pData[i], pSeg->pgnoFirst);
i += fts5GetVarint32(&pData[i], pSeg->pgnoLast);
if( pSeg->pgnoLast<pSeg->pgnoFirst ){
rc = FTS5_CORRUPT;
break;
}
}
}
}

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@ -35,7 +35,6 @@ proc create_t1 {} {
}
}
if 1 {
# Create a simple FTS5 table containing 100 documents. Each document
# contains 10 terms, each of which start with the character "x".
@ -380,8 +379,6 @@ do_test 7.1 {
}
} {}
}
#------------------------------------------------------------------------
# Corruption within the structure record.
#
@ -963,6 +960,88 @@ do_catchsql_test 15.1 {
INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {database disk image is malformed}}
#---------------------------------------------------------------------------
#
reset_db
do_test 16.0 {
sqlite3 db {}
db deserialize [decode_hexdb {
| size 28672 pagesize 4096 filename c17.db
| page 1 offset 0
| 0: 53 51 4c 69 74 65 20 66 6f 72 6d 61 74 20 33 00 SQLite format 3.
| 16: 10 00 01 01 00 40 20 20 00 00 00 00 00 00 00 07 .....@ ........
| 32: 00 00 00 00 00 00 00 00 00 00 00 07 00 00 00 00 ................
| 48: 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 ................
| 96: 00 00 00 00 0d 00 00 00 07 0d d2 00 0f c4 0f 6d ...............m
| 112: 0f 02 0e ab 0e 4e 0d f6 0d d2 00 00 00 00 00 00 .....N..........
| 3536: 00 00 22 07 06 17 11 11 01 31 74 61 62 6c 65 74 .........1tablet
| 3552: 32 74 32 07 43 52 45 41 54 45 20 54 41 42 4c 45 2t2.CREATE TABLE
| 3568: 20 74 32 28 78 29 56 06 06 17 1f 1f 01 7d 74 61 t2(x)V.......ta
| 3584: 62 6c 65 74 31 5f 63 6f 6e 66 69 67 74 31 5f 63 blet1_configt1_c
| 3600: 6f 6e 66 69 67 06 43 52 45 41 54 45 20 54 41 42 onfig.CREATE TAB
| 3616: 4c 45 20 27 74 31 5f 63 6f 6e 66 69 67 27 28 6b LE 't1_config'(k
| 3632: 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 76 29 PRIMARY KEY, v)
| 3648: 20 57 49 54 48 4f 55 54 20 52 4f 57 49 44 5b 05 WITHOUT ROWID[.
| 3664: 07 17 21 21 01 81 01 74 61 62 6c 65 74 31 5f 64 ..!!...tablet1_d
| 3680: 6f 63 73 69 7a 65 74 31 5f 64 6f 63 73 69 7a 65 ocsizet1_docsize
| 3696: 05 43 52 45 41 54 45 20 54 41 42 4c 45 20 27 74 .CREATE TABLE 't
| 3712: 31 5f 64 6f 63 73 69 7a 65 27 28 69 64 20 49 4e 1_docsize'(id IN
| 3728: 54 45 47 45 52 20 50 52 49 4d 41 52 59 20 4b 45 TEGER PRIMARY KE
| 3744: 59 2c 20 73 7a 20 42 4c 4f 42 29 55 04 06 17 21 Y, sz BLOB)U...!
| 3760: 21 01 77 74 61 62 6c 65 74 31 5f 63 6f 6e 74 65 !.wtablet1_conte
| 3776: 6e 74 74 31 5f 63 6f 6e 74 65 6e 74 04 43 52 45 ntt1_content.CRE
| 3792: 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 63 6f ATE TABLE 't1_co
| 3808: 6e 74 65 6e 74 27 28 69 64 20 49 4e 54 45 47 45 ntent'(id INTEGE
| 3824: 52 20 50 52 49 4d 41 52 59 20 4b 45 59 2c 20 63 R PRIMARY KEY, c
| 3840: 30 29 69 03 07 17 19 19 01 81 2d 74 61 62 6c 65 0)i.......-table
| 3856: 74 31 5f 69 64 78 74 31 5f 69 64 78 03 43 52 45 t1_idxt1_idx.CRE
| 3872: 41 54 45 20 54 41 42 4c 45 20 27 74 31 5f 69 64 ATE TABLE 't1_id
| 3888: 78 27 28 73 65 67 69 64 2c 20 74 65 72 6d 2c 20 x'(segid, term,
| 3904: 70 67 6e 6f 2c 20 50 52 49 4d 41 52 59 20 4b 45 pgno, PRIMARY KE
| 3920: 59 28 73 65 67 69 64 2c 20 74 65 72 6d 29 29 20 Y(segid, term))
| 3936: 57 49 54 48 4f 55 54 20 52 4f 57 49 44 55 02 07 WITHOUT ROWIDU..
| 3952: 17 1b 1b 01 81 01 74 61 62 6c 65 74 31 5f 64 61 ......tablet1_da
| 3968: 74 61 74 31 5f 64 61 74 61 02 43 52 45 41 54 45 tat1_data.CREATE
| 3984: 20 54 41 42 4c 45 20 27 74 31 5f 64 61 74 61 27 TABLE 't1_data'
| 4000: 28 69 64 20 49 4e 54 45 47 45 52 20 50 52 49 4d (id INTEGER PRIM
| 4016: 41 52 59 20 4b 45 59 2c 20 62 6c 6f 63 6b 20 42 ARY KEY, block B
| 4032: 4c 4f 42 29 3a 01 06 17 11 11 08 63 74 61 62 6c LOB):......ctabl
| 4048: 65 74 31 74 31 43 52 45 41 54 45 20 56 49 52 54 et1t1CREATE VIRT
| 4064: 55 41 4c 20 54 41 42 4c 45 20 74 31 20 55 53 49 UAL TABLE t1 USI
| 4080: 4e 47 20 66 74 73 35 28 63 6f 6e 74 65 6e 74 29 NG fts5(content)
| page 2 offset 4096
| 0: 0d 00 00 00 03 0f bd 00 0f e8 0f ef 0f bd 00 00 ................
| 4016: 00 00 00 00 00 00 00 00 00 00 00 00 00 24 84 80 .............$..
| 4032: 80 80 80 01 03 00 4e 00 00 00 1e 06 30 61 62 61 ......N.....0aba
| 4048: 63 6b 01 02 02 04 02 66 74 00 02 22 04 04 6e 64 ck.....ft.....nd
| 4064: 6f 6e 03 02 02 04 0a 07 05 01 03 00 10 03 03 0f on..............
| 4080: 0a 03 00 24 00 00 00 00 01 01 01 00 01 01 41 01 ...$..........A.
| page 3 offset 8192
| 0: 0a 00 00 00 01 0f fa 00 0f fa 00 00 00 00 00 00 ................
| 4080: 00 00 00 00 00 00 00 00 00 00 05 04 09 0c 01 02 ................
| page 4 offset 12288
| 0: 0d 00 00 00 03 0f e0 00 0f f6 0f ec 0f e0 00 00 ................
| 4064: 0a 03 03 00 1b 61 62 61 6e 64 6f 6e 08 02 03 00 .....abandon....
| 4080: 17 61 62 61 66 74 08 01 03 00 17 61 62 61 63 6b .abaft.....aback
| page 5 offset 16384
| 0: 0d 00 00 00 03 0f ee 00 0f fa 0f f4 0f ee 00 00 ................
| 4064: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 03 ................
| 4080: 03 00 0e 01 04 02 03 00 0e 01 04 01 03 00 0e 01 ................
| page 6 offset 20480
| 0: 0a 00 00 00 01 0f f4 00 0f f4 00 00 00 00 00 00 ................
| 4080: 00 00 00 00 0b 03 1b 01 76 65 72 73 69 6f 6e 04 ........version.
| page 7 offset 24576
| 0: 0d 00 00 00 03 0f d6 00 0f f4 0f e1 0f d6 00 00 ................
| 4048: 00 00 00 00 00 00 09 03 02 1b 72 65 62 75 69 6c ..........rebuil
| 4064: 64 11 02 02 2b 69 6e 74 65 67 72 69 74 79 2d 63 d...+integrity-c
| 4080: 68 65 63 6b 0a 01 02 1d 6f 70 74 69 6d 69 7a 65 heck....optimize
| end c17.db
}]} {}
do_catchsql_test 16.1 {
INSERT INTO t1(t1) VALUES('integrity-check');
} {1 {vtable constructor failed: t1}}
sqlite3_fts5_may_be_corrupt 0
finish_test

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@ -1,5 +1,5 @@
C Fix\sa\sproblem\sin\swhich\snested\sCTEs\swith\sthe\ssame\stable\sname\strick\sthe\ncode\sgenerator\sinto\sthinking\sthey\sare\sthe\ssame\sCTE,\swhich\sthen\stries\sto\nuse\sthe\smanifest\sthem\sboth\sinto\sthe\ssame\stransient\stable.
D 2018-12-27T02:16:01.888
C Fix\sa\snull-pointer\sdereference\sthat\scould\soccur\sin\sfts5\swith\sa\scorrupt\ndatabase.
D 2018-12-27T07:46:37.854
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F Makefile.in d8b254f8bb81bab43c340d70d17dc3babab40fcc8a348c8255881f780a45fee6
@ -115,7 +115,7 @@ F ext/fts5/fts5_buffer.c 1dd1ec0446b3acfc2d7d407eb894762a461613e2695273f48e449bf
F ext/fts5/fts5_config.c 5af9c360e99669d29f06492c370892394aba0857
F ext/fts5/fts5_expr.c 5aef080ba3c8947e22f38ce1ff9fe548e4a740e72b77241f35ed941ae128d2c7
F ext/fts5/fts5_hash.c 32be400cf761868c9db33efe81a06eb19a17c5402ad477ee9efb51301546dd55
F ext/fts5/fts5_index.c d98210603b2e97be46514f656846a02b2a31577fafa9092303391582a12c3a2f
F ext/fts5/fts5_index.c fb67df508cf5fa468a7f022f383069c83a428306eae1c92404889f8ca856884a
F ext/fts5/fts5_main.c 287a1a56580df304d7fa2fc1890f85b9cb6ac6b9e7c8af7dfa2151528db4b059
F ext/fts5/fts5_storage.c 5862f1b785a983acb8420281340f3f424896ab48f396f6fd8540787be7459139
F ext/fts5/fts5_tcl.c 39bcbae507f594aad778172fa914cad0f585bf92fd3b078c686e249282db0d95
@ -156,7 +156,7 @@ F ext/fts5/test/fts5connect.test 08030168fc96fc278fa81f28654fb7e90566f33aff269c0
F ext/fts5/test/fts5content.test 688d5ac7af194ebc67495daea76a69e3cd5480122c2320e72d41241b423b4116
F ext/fts5/test/fts5corrupt.test 77ae6f41a7eba10620efb921cf7dbe218b0ef232b04519deb43581cb17a57ebe
F ext/fts5/test/fts5corrupt2.test 7453752ba12ce91690c469a6449d412561cc604b1dec994e16ab132952e7805f
F ext/fts5/test/fts5corrupt3.test 2f765292cc876a19418b39dd68c3c9546bb5a500aaecafabd41e47a55d757e3d
F ext/fts5/test/fts5corrupt3.test c6048b9a8c1a44b26ef34da194b74f0fdac22ca94dea6a56b00ef0e416b58d38
F ext/fts5/test/fts5delete.test cbf87e3b8867c4d5cfcaed975c7475fd3f99d072bce2075fcedf43d1f82af775
F ext/fts5/test/fts5detail.test 31b240dbf6d44ac3507e2f8b65f29fdc12465ffd531212378c7ce1066766f54e
F ext/fts5/test/fts5determin.test 1b77879b2ae818b5b71c859e534ee334dac088b7cf3ff3bf76a2c82b1c788d11
@ -1794,7 +1794,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 11d4682d2eec133ccca99ca9cf2620cd249b4afe55918f3ebf93b454431f9c55
R b977f91c4d7722c35c09931be1f3c206
U drh
Z d4830dab28dbec43d7f7b026ad797e66
P 202dd033019dd27428e3cc5f6e164c95b37efe39e2753515112b201ddefca67b
R cb7ad8439be69a36c6d89868539a5621
U dan
Z 42281b26e0ddec2713ac794323accdfa

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@ -1 +1 @@
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