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Overview
Comment: | Fix the fts3DecodeIntArray() function so that it will not read off the end of the buffer it is handed. Any unread integers are set to zero. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA3-256: |
666cf8f6b39ae1f72e82b45e9cacba23 |
User & Date: | drh 2019-01-10 01:12:43.917 |
Context
2019-01-10
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13:56 | Use the new SQLITE_IDXTYPE_IPK values (3) on Index.idxType to indicate the fake INTEGER PRIMARY KEY index used during query planning. (check-in: e22d2f905f user: drh tags: trunk) | |
01:12 | Fix the fts3DecodeIntArray() function so that it will not read off the end of the buffer it is handed. Any unread integers are set to zero. (check-in: 666cf8f6b3 user: drh tags: trunk) | |
2019-01-09
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21:12 | Fix an out-of-bounds read in SQL function fts5_decode() that could occur if it was passed a corrupt record. (check-in: 931278b257 user: dan tags: trunk) | |
Changes
Changes to ext/fts3/fts3_write.c.
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3323 3324 3325 3326 3327 3328 3329 | */ static void fts3DecodeIntArray( int N, /* The number of integers to decode */ u32 *a, /* Write the integer values */ const char *zBuf, /* The BLOB containing the varints */ int nBuf /* size of the BLOB */ ){ | | | > | | | < | | > > | 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 | */ static void fts3DecodeIntArray( int N, /* The number of integers to decode */ u32 *a, /* Write the integer values */ const char *zBuf, /* The BLOB containing the varints */ int nBuf /* size of the BLOB */ ){ int i = 0; if( nBuf && (zBuf[nBuf-1]&0x80)==0 ){ int j; for(i=j=0; i<N && j<nBuf; i++){ sqlite3_int64 x; j += sqlite3Fts3GetVarint(&zBuf[j], &x); a[i] = (u32)(x & 0xffffffff); } } while( i<N ) a[i++] = 0; } /* ** Insert the sizes (in tokens) for each column of the document ** with docid equal to p->iPrevDocid. The sizes are encoded as ** a blob of varints. */ |
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